Glass Reactors

Customized Glass Reactors Available

Apply Our Best

GWSI Glass Reactors

You can import CE certified glass reactor from GWSI. From 1L to 100L in volume, GWSI provide a wide range of glass reactors to choose. Besides glass reactors, you can also import qualified rotary evaporators from GWSI.

As a premier glass reactor manufacturer, GWSI can customize glass reactors to meet your special requirements. Whether you need standard type or explosion proof glass reactor, GWSI is always support you from sourcing to installation and maintain.

GWSI 2L Glass Reactor fits for laboratory-scale material synthesis reactions.

Suitable for laboratories in universities.

Function: Mixing and more

Main Data

  • Model: GR-2CE
  • Vessel Capacity: 2L
  • Jacket Capacity: 1.7L
  • Stirring Speed: 40-500rpm

GWSI 5L Glass Reactor use Patented PTFE stirrer bearing for reliable and quiet operation.

Suitable for laboratories in research institutes.

Function: Synthesizing and more

Main Data

  • Model: GR-5CE
  • Vessel Capacity: 5L
  • Jacket Capacity: 3L
  • Stirring Speed: 20-500rpm

GWSI equip 10L Glass Reactor with Brushless DC motor for tough stirring work.

Suitable for petrochemical engineering.

Function: Reaction and more

Main Data

  • Model: GR-10CE
  • Vessel Capacity: 10L
  • Jacket Capacity: 8L
  • Stirring Speed: 20-500rpm

GWSI 20L Glass Reactor use high borosilicate glass suitable for high temperature.

Suitable for Rare Earth Industry.

Function: Synthesizing and more

Main Data

  • Model: GR-20CE
  • Vessel Capacity: 20L
  • Jacket Capacity: 9L
  • Stirring Speed: 20-500rpm

GWSI 50L Glass Reactor feature in SUS 304 supporting framework with lockable casters.

Suitable for Semiconductor Industry.

Function: Synthesizing and more

Main Data

  • Model: GR-50CE
  • Vessel Capacity: 50L
  • Jacket Capacity: 13L
  • Stirring Speed: 20-500rpm

GWSI 100L Glass Reactor discharge valve is easy to drain out with no dead volume.

Suitable for Fertilizer industry.

Function: Synthesizing and more

Main Data

  • Model: GR-100CE
  • Vessel Capacity: 100L
  • Jacket Capacity: 30L
  • Stirring Speed: 50-100rpm

Lifting Speed Regulating Glass Reactor

GWSI GRL-10 Glass Reactor can rotate 120° to let you add solvent materials.

Main Data

  • Model: GRL-10
  • Vessel Capacity: 10L
  • Jacket Capacity: 8L
  • Stirring Speed: 20-500rpm

GRL-20 Glass Reactor has superior sealing effect .

Main Data

  • Model: GRL-20
  • Vessel Capacity: 20L
  • Jacket Capacity: 9L
  • Stirring Speed: 20-500rpm

GRL-50 Glass Reactor feature in lift available glass body.

Main Data

  • Model: GRL-50
  • Vessel Capacity: 50L
  • Jacket Capacity: 13L
  • Stirring Speed: 50-100rpm

Explosion Proof Glass Reactor

GWSI GR-5Ex Glass Reactor is a explosion proof glass reactor designed for lab.

Main Data

  • Model: GR-5Ex
  • Vessel Capacity: 5L
  • Jacket Capacity: 3L
  • Stirring Speed: 20-500rpm

GR-10Ex Glass Reactor is easy to add material with suitable discharge valve.

Main Data

  • Model: GR-10Ex
  • Vessel Capacity: 10L
  • Jacket Capacity: 8L
  • Stirring Speed: 20-500rpm

GR-50Ex Glass Reactor equipped with anti-explosion motor for safety.

Main Data

  • Model: GR-50Ex
  • Vessel Capacity: 50L
  • Jacket Capacity: 13L
  • Stirring Speed: 50-100rpm

Your Premium Glass Reactors Manufacturer

GWSI is your reliable glass reactor manufacturer in China and GWSI is the designated glass reactor manufactuer and supplier for Chinese Vaccine companies. GWSI has a world-class research and development center equipped with advanced facilities where professional designers, product developers, and product support engineers work.

You can let GWSI customize glass reactor for your client requirement. Many Asian, European and South America pharmaceutical companies use GWSI customized glass reactor to develop Covid-19 vaccine products. 

Glass Reactor Processing Machine

GWSI has strict glass reactor manufacturing standard. Every processing step is recorded to avoid potential quality defects.

There are complete glass reactor production line with experience workers in GWSI factory. You will get qualified glass reactor and glass reactor parts from GWSI.

Glass Reactors Quality Control

GWSI glass reactor meet CE certification requirement and many international standards. All raw materials of GWSI glass reactors come from top rated manufacturers.

GWSI make completely quality inspection for glass reactor  before shipment such as running test, gas pressure and more.  GWSI make glass kettle body thickness detection, there are few glass reactor manufacturers that measure the thickness of the kettle body.

Glass Reactor Application

Glass Reactor For Lab Synthesis Reaction

GWSI glass reactor can help you make lab reaction in higher efficiency and safety status. There are many settings such as overnrun precaution to ensure you safe.

Glass Reactors For Petrochemical

GWSI provide durable glass reactor for petro engineering industry. No matter what requirement you need, GWSI can support you with 34+ years experience.

Glass Reactor For CBD Decarboxylation

GWSI is your reliable partner on CBD processing with customized glass reactors. You can easily get the solution to finish the process with GWSI glass reactor.

Glass Reactors For Pharmaceutical

GWSI give you support on pharma factory and other industries. As a premier glass reactor manufacturer, GWSI can provide one-stop solution for your any requirement.

GWSI Glass Reactor Manufacturing Capacity To Support Your Need

GWSI Glass Reactor Workshop

Glass Reactor Workshop

Large & modern workshop

Glass Reactor Raw Materials in factory

Glass Reactor Materials

Highest grade raw materials

Glass Reactor Structure

Glass Reactor Structure

Strong & stable structure

Glass Reactor Quality Check

Glass Reactor Quality Check

Complete Glass Reactor QC

GWSI Glass Reactor Package

Glass Reactor Package

Thickened foam package

Glass Reactor Components

Glass Reactor Components

Accessories available for long time

GWSI product catalog
Download Catalog
GWSI product catalog
Download Catalog

Support Resource About Glass Reactors

Glass Reactors Parts List

Glass Reactors Parts List

This is the glass reactor parts list from this article.

Glass Reactors Operating Guide

Glass Reactors Operating Guide

You can learn how to operate the glass reactor in shortest time.

Glass Reactors Trouble Shooting

Glass Reactors Trouble Shooting

Here list the most common glass reactor trouble shooting methods.

Top 50 Glass Reactor Manufacturers

Top50 Glass Reactor Manufacturers

This is the post of Top 50 glass reactor manufacturers.

GWSI Glass Reactors Installation Guide

Glass Reactors Installation Guide

This article will help you install glass reactors.

Glass Reactors Maintain Guide From GWSI

Glass Reactors Maintain Guide

You can learn to maintain glass reactor with this guide.

Glass Reactors Complete Guide

Send Your Inquiry

What Is Glass Reactor?

What Is Glass Reactor

Glass reactor is one of the most commonly used reactors. The glass reactor features in no pollution, high temperature resistant, corrosion resistant, sanitation, and fast heating speed.

The glass reactor consists of double-layer glass. The inner layer can be stirred and reacted by putting the reaction solvent.

You can connect the inner layer of glass reactor to different cold and heat sources such as refrigerated liquid, hot water or hot oil for cyclic heating or cooling reaction.

What is Glass Reactor Feature?

What is Glass Reactor Feature
  • Electronic stepless speed regulation, no sparks in the motor, safe and reliable.
  • All glass parts are made of high temperature resistant borosilicate glass material, which has good physical and chemical properties.
  • Equipped with a discharge switch, the recovery of the solvent is very fast.
  • The whole machine adopts stainless steel, aluminum alloy and new synthetic materials, which has the advantages of anti-corrosion, anti-rust and resistance to various solvents.
  • Standardized connection method, easy to disassemble.
  • PTFE material and special rubber compound sealing ring are used for sealing, which can withstand various solvents and maintain a high degree of vacuum, which is very convenient to use.

What is Glass Reactor Trend?

What is Glass Reactor Trend
  • Large volume, this is an effective way and development trend to increase production, reduce quality errors between mass production and reduce product costs.
  • The stirrer of the glass reactor has been developed from a single stirrer to a forced circulation with a double stirrer or an external pump.
  • Replace the cumbersome manual operation with production automation and continuity, such as the use of program control, which can not only ensure stable production, improve product quality, increase revenue, reduce manual labor, but also eliminate environmental pollution.

What Are The Types Of Glass Reactors?

What Are The Types Of Glass Reactors

You can classify Glass Reactors according to vessel capacity. There exists 2L glass reactor, 5L glass reactor, 10L glass reactor, 20L glass reactor, 50L glass reactor, 100L glass reactor and more types.

Let’s break the details below.

2L Glass Reactor

GWSI 2L Glass Reactor for sale

2L Glass Reactor is a smaller type lab glass reactor suitable for experiements.

You can also use it to teach chemical in university.

5L Glass Reactor

5L lab glass reactor by GWSI

You can use 5L glass reactor for larger experiement need.

It has 5L vessel capacity with 3L jacket capacity.

10L Glass Reactor

GWSI 10L glass reactor

10L glass reactor can help you get enough reaction compared to 5L glass reactor.

You can try 10L glass reactor if your process need a little larger capacity.

20L Glass Reactor

GWSI 20L glass reactor

20L Glass Reactor is suitable for pilot reaction process.

It has 20L vessel capacity and 9L jacket capacity.

50L Glass Reactor

GWSI 50L glass reactor

You can use 50L Glass Reactor to do the industrial chemical experiment.

It has larger vessel capacity and is convenient to move.

100L Glass Reactor

GWSI 100L glass reactor

100L Glass Reactor will have a wide application for different industries.

It features in 50-100rpm stirring speed.

Send Your Inquiry

What is the Specifications of Glass Reactor?

You can see the specifications of glass reactor as belows:

2L Glass Reactor Specifications

  • Model: GR-2CE
  • Vessel Capacity: 2L
  • Jacket Capacity: 1.7L
  • Stirring Speed: 40-500rpm
  • Power Supply: 110V~240V, 50/60Hz
  • Condensing Area: 0.025㎡
  • Dimensions: 480W*480D*1200H mm
  • Net Weight: 29kg

5L Glass Reactor Specifications

  • Model: GR-5CE
  • Vessel Capacity: 5L
  • Jacket Capacity: 3L
  • Stirring Speed: 20-500rpm
  • Power Supply: 110V~240V, 50/60Hz
  • Condensing Area: 0.045㎡
  • Dimensions: 600W*520D*1600H mm
  • Net Weight: 34kg

10L Glass Reactor Specifications

  • Model: GR-10CE
  • Vessel Capacity: 10L
  • Jacket Capacity: 8L
  • Stirring Speed: 20-500rpm
  • Power Supply: 110V~240V, 50/60Hz
  • Condensing Area: 0.234㎡
  • Dimensions: 845W*640D*1780H mm
  • Net Weight: 48kg

20L Glass Reactor Specifications

  • Model: GR-20CE
  • Vessel Capacity: 20L
  • Jacket Capacity: 9L
  • Stirring Speed: 20-500rpm
  • Power Supply: 110V~240V, 50/60Hz
  • Condensing Area: 0.341㎡
  • Dimensions: 845W*640D*1780H mm
  • Net Weight: 67kg

50L Glass Reactor Specifications

  • Model: GR-50CE
  • Vessel Capacity: 50L
  • Jacket Capacity: 13L
  • Stirring Speed: 20-500rpm
  • Power Supply: 110V~240V, 50/60Hz
  • Condensing Area: 0.429㎡
  • Dimensions: 900W*690D*2100H mm
  • Net Weight: 82kg

100L Glass Reactor Specifications

  • Model: GR-100CE
  • Vessel Capacity: 100L
  • Jacket Capacity: 30L
  • Stirring Speed: 20-500rpm                              
  • Power Supply: 220V~240V, 50/60Hz
  • Condensing Area: 0.954㎡
  • Dimensions: 1270W*810D*2360H mm
  • Net Weight: 119kg


Send Your Inquiry

How Does Glass Reactor Work

How Does Glass Reactors Work?

The constant temperature hot solution or cooling liquid is injected through the glass reactor interlayer to heat or cooling the materials in glass reactor at a constant temperature and can provide stirring.

The material react in the reactor, and you can control the evaporation and reflux of the reaction solution.

The glass reactor operation is extremely convenient.

After the reaction is completed, the material can be discharged from the discharge port at the bottom of the glass reactor kettle.

Send Your Inquiry

How Does Glass Reactor Work

How To Choose Glass Reactors ?

Here is the truth:

You need to consider multi factors before search glass reactor price.

Here we list the main items you need to consider.

Reaction Required Temperature Range


You should know your reaction temperature as glass reactor can bear -80℃ to 200℃ temperature. 

It is not available to use glass reactor if your reaction temperature below -80℃ or exceed 200℃.

Reaction Pressure

Generally, glass reactors is suitable to use under vacuum or negative pressure conditions.

You can’t use glass reactor if your reaction produce positive pressure as it will add the crack damage to your glass reactor glass body.

Glass Reactors Volume

This is easy to understand.

Large size glass reactor usually cost more than small glass reactor.

You will spend higher price for 50L glass reactor than 10L glass reactor.

Material Viscosity

The viscosity of material determines the power of the motor and stirring paddle types.

The larger viscosity of material, the larger power of the motor.

Whether to Use Glass Reactor Jacket to Process Material

Here is the deal:

You need to pay higher price to buy jacketed glass reactor and double jacketed glass reactor.

Jacketed glass reactor and double jacketed glass reactor can ciruclate thermol fluid with inner jacket.

You can also use double jacketed glass reactor to keep temperature in vacuum conditions and avoid frost.

Are There Multiple Excipients to be Added in Glass Reactor?

You might be wondering:

Is there any correlation between excipients and glass reactor types?

The answer is:

The quantity of excipients decides the glass cover ports design.

The more excipients, the more complex design the glass cover ports will be.

Whether Explosion-Proof is Required


You need to use explosion-proof glass reactor if there is combustible gas or combustible dust in your experiment environment.

Instead, you can pay less cost for a ordianry glass reactor if there is no need to use explosion-proof glass reactor.

Whether You Need Customzied Glass Reactor

It is known that customized glass reactor cost more than general glass reactor.

For example:

You want to collect the evaporated gas from the glass reactor individually.

In this case, you have to customize the glass reactor if the standard type does not design this function.

Whether you need Matching Temperature Control Equipment


Some pharma or chemical reaction need temperature control equipment to work together with glass reactor.

This will add your budget if you need to use temperature contol equipment for glass reactor.

Glass Reactor Manufacturers

Here is the truth:

You will get glass reactor at higher price from European manufacturer compared to Asian manufacturers.

Different manufacturers offer glass reactor with different price.

You should confirm your budget and quality grade when sourcing glass reactors.

Send Your Inquiry

How Does Glass Reactor Work

How To Operate Glass Reactors ?


You should follow these  procedures when operating glass reactor:

  1. First, check whether the medium corrodes the main material when you make the reaction of different media in the glass reactor.
  2. When loading the reaction medium, it should not exceed 2/3 of the liquid level of the glass reactor kettle body.
  3. Disassembly under pressure is strictly prohibited! It is strictly forbidden for the kettle to work under the condition of overpressure and overtemperature.
  4. Be careful not to mix water or other liquids when adding heat transfer oil.
  5. Regularly check the swing of the stirring shaft. If the swing is too large, the bearing or sliding sleeve should be replaced in time.
  6. Connect the corresponding voltage according to the usage voltage of the controller.
  7.  When the final reaction temperature is determined, it is not allowed to change the temperature setting value during the heating process to avoid a large overshoot of the temperature. 

Send Your Inquiry

How Does Glass Reactor Work

How To Maintain Glass Reactor?

If you want to know how to maintain glass reactor, you can refer to the following steps.

  • Wipe each interface with a soft cloth, then apply a little vacuum grease.
  • The interfaces of the glass reactor should not be tightened too tightly, and the joints should be loosened regularly to avoid long-term locking that will cause the connectors to be killed.
  • The PTFE switches everywhere should not be over-tightened, which will easily damage the glass.
  • Regularly clean the sealing ring, the method is: remove the sealing ring, check whether there is dirt on the shaft, wipe it with a soft cloth, then apply a little vacuum grease, and reinstall it to keep the shaft and the sealing ring smooth.

Send Your Inquiry

How Does Glass Reactor Work

What is Glass Reactor Precautions

Here are glass reactor precautions :

  1. Before operating the glass reactor, carefully check whether there is any abnormality. During normal operation, do not open the top cover and touch the wiring terminals on the board to avoid electric shock.
  2. The heating speed of the glass reaction kettle should not be too fast, and the pressure should be carried out slowly, especially the stirring speed, only slow rising speed is allowed.
  3. The instrument must not be cooled quickly to prevent damage caused by excessive temperature differential pressure.
  4. When the glass reaction kettle is running, the water jacket between the coupling and the kettle cover must pass cooling water to control the working temperature of the magnetic steel and avoid demagnetization.

Send Your Inquiry

How Does Glass Reactor Work

Glass Reactor Manufacturers

Are you finding glass reactor manufacturers?

Here we list top glass reactors manufacturers in the world to help you source glass reactor.



Buchiglas is a well-known brands manufacturer about glass reactor and other lab equipment.  Buchiglas has many distributors worldwide and headquarter in Switzerland.

Buchiglas provide technical service through worldwide distributors so you can get support in fast time.

2. Chemglass Life Sciences

chemglass glass reactor

Chemglass Life Sciences has strong capability to offer whole line of scientific instruments and chemical items.

You can find 10L-100L reactor system in Chemglass and buy jacketed & unjacketed glass reactor from them.

You can also ask them special type if there is not suitable one to meet your need.

3. De Dietrich

De Dietrich glass reactor

De Dietrich focus on glass equipment since 1684 and has provided glass reactors to pharmaceutical, chemical, education and more indutries.

You will get upgrade, maintain and training, etc service from De Dietrich for the glass reactors.

4. Parr Instrument

Parr Instrument glass reactor

Parr Instrument has 100 years history on supplying lab equipment including glass reactors. You can buy standard and customized glass reactors.

Parr Instrument is one of American glass reactor manufacturers. They have 100+ workers in the manufacturing place.


GWSI Glass Reactor Manufacturer

GWSI is premier glass reactor manufacturer in China with 34 years experience.

You can import glass reactor, rotary evaporator and more lab equipment from GWSI.

GWSI has helped brands manufactuers gain market through OEM, ODM service.

You can spend less cost and get European quality glass reactor from GWSI.

6. AGI Glassplant

AGI Glassplant glass reactor manufacturer

AGI Glassplant is expert manufacturer in chemical solutions such as reaction, filtration, distillation and more. 

Headquarter in Japan, AGI Glassplant provide lab scale, pilot plant, benchtop, pressure and universal reactor.

7. UD Technologies

udtechnologies glass reactor manufacturer

UD Technologies is one of premier Indian glass reactor manufacturers and focus on Pilot Plants for Chemicals Reasearch and Development and Production as well as Engineering Education.

You can improve process reliability and safety with UD Technologies glass reactors.


Radleys glass reactor manufacturer

Radleys has 50+ years experience on manufacturing glassware and lab equipment with innovation ability.

You will get safe and productive reactor from Radleys as they always put safe in mind when developing products.

9. Steroglass

Steroglass glass reactor manufacturer

Steroglass is Italy glass reactor manufacturer and focus on pharmaceutical products.

Steroglass mainly provide solution for Laboratory Instruments and Industrial glass system. You can source Lab Reactors, Rotary Evaporators, Titrators and more from them.

10. Syrris

Syrris glass reactor manufacturer

Syrris locates in UK and has USA, India, Japan offices plus 50+ distributors worldwide.

Syrris specialize in jacketed glass reactor system and has suport team to help you solve problems quickly.

11. Pfaudler

Pfaudler glass reactor manufacturer

Pfaudler is reputated chemical processing equipment manufacturer with full support on Evaporation & Distillation Systems.

With global service network, Pfaudler can provide techncial service in different country at fast time.

Pfaudler believe safety first and offer maintain after sale service to clients.

12. Ablaze Glass Work

ablaze glass work Glass Reactor Manufacturer

Ablaze Glass Work is a global manufacturer of scientific and industrial equipment that supplies complete chemical processing systems.

Our products meet international standards. You can also get PTFE, SS 304, SS 316, SS316L material from us.

13. Goel Scientific Inc

Goel Scientific Inc glass reactor manufacturers

Goel Scientific Inc is world professional scientific glass reactor manufacturer with full portfolio category on lab reactor, industrial reactor, double jacketed reactor and more glassware to support your unique need.

14. Super Scientific Works

superscientific glass reactor manufacturer

Super Scientific Works is world leading Borosilicate Glass Reactor manufacturer in India.

They have gained all certifications for glass reactors and can provide support service for you.

Send Your Inquiry

How Does Glass Reactor Work

Precautions For The Glass Reactor Heat Transfer Oil

When using the heat transfer oil for the first time, there should be no impurities, no mixing of new and old oil, and no chemical liquid dripping into it.

It cannot be heated to a high temperature at one time. It needs to be heated slowly first, and the temperature is slowly raised to allow the oil to be fully heated, so that it can be used for a longer time.

Domestic thermal conductive silicone oil generally boils when it is heated to about 160 degrees.

It is recommended that you choose imported thermal conductive silicone oil, which is colorless, odorless and has a longer service life.

Send Your Inquiry

How Does Glass Reactor Work

What is Glass Reactor Temperature Control and Decompression Measures?

Glass Reactor Heating Control Measures

For the materials whose reaction temperature is below 90℃, steam and hot water can be used for heating in stages.

First, the temperature should be uniform during heating to avoid local overheating and prevent some materials from deteriorating.

First, use steam to heat to about 60 °C at a medium speed to improve production efficiency, and then use 90 °C hot water to slowly heat up to the specified temperature.

In this way, the staged heating can improve the production efficiency, and at the same time, it can prevent the material from being decomposed by local high temperature or violently vaporized, and can also improve the recovery rate of the material balance reaction and reduce the consumption cost.

Glass Reactor Cooling Control Measures


The glass reactor cooling system usually used for cooling reaction is mainly jacket cooling and coil cooling.

The cooling liquid used is mainly circulating water and freezing liquid. The cooling rate of the cooling liquid is fast but the cost is high.

During the experiment, if the temperature and pressure rise sharply, you should immediately stay away from the site for personal safety.

Therefore, it is necessary to set an emergency opening of the cooling system button in a slightly far away place, so that the heat source can be quickly cut off for cooling under the premise of ensuring personal safety.

Glass Reactor Explosion Prevention Measures

In order to prevent the material in the three-layer glass reactor from generating a large amount of gas and increasing the pressure when the temperature is out of control, an emergency pressure relief should be set up.

A safety valve should be installed on the top of the glass reactor, if the pressure is too high, the pressure can be released in time.

A bursting disc should be installed for the process that may have a relatively violent reaction, and the outlet of the connecting pipe of the bursting disc must be extended to an outdoor safe place.

Do not point directly to the aisle or operating platform to prevent material splashing and hurting people.

Send Your Inquiry

How Does Glass Reactor Work

What is Glass Reactor Price?

How much does glass reactor cost?

There shows $2984 for a small glass reactor on internet.

But you should consider the following factors when ask the glass reactor price.

Glass Reactor Design

Here is the deal:

You need to pay more money for a customize design glass reactor than standard type.


Cusomized glass reactor requires more design and cost to reach the function.

Standard glass reactor does not need to add extra elements and it does not need more labor to finalize function.

Glass Reactor Volume


Different volume require different cost and glass reactor manufactuer sell them at different price.

You have to pay more if you choose 20L glass reactor compared to 10L glass reactor.

Glass Reactor Parameter Configuration

Here is the truth:

The more functions, the more configurable parameters, the higher the glass reactor price.

You need to confirm if you need compressive strength, whether there is heating, evaporation, cooling and other functions.

Glass Reactor Brands

Generally, European brands glass reactor price will be higher than China glass reactor.

But you can also find reliable quality glass reactor from China manufacturer.

This is up to your choice.

If you want to use a famous brands glass reactor, you need pay higher price.

But you need to avoid to use vey low price to buy the cheaper glass reactor as it might lead safety issue during your usage.

Send Your Inquiry

How Does Glass Reactor Work

How to Choose Stirring Paddle for Glass Reactor?


The stirring paddles of glass reactors are mostly made of stainless steel and PTFE.

Of course, you can choose glass material stirring paddles for your glass reactor.

Here is the question:

How to choose the right type of stirring paddles for glass reactor?

Here we introduce the main glass reactor stirring paddles types with practical tips.

Anchor Glass Reactor Stirring Paddle

The anchor stirring paddle is made of stainless steel and covered with PTFE, and the shape is crescent shape.

If the capacity of the glass reactor is 10-50L, you can use the middle stirring paddle.

Frame Glass Reactor Stirring Paddle

Frame Glass Reactor Stirring Paddle

Frame Stirring Paddle is also made of stainless steel and covered with PTFE, the shape is fan-shaped with oval or flat bottom.

It is suitable for materials with high viscosity. When stirring, the materials at the bottom of the kettle can be scraped to the bottom of the kettle.

Three-blade Stirring Paddle

Three-blade Stirring Paddle

Three-blade Stirring Paddle is the screw-type stirring paddle.

It is suitable for the 1-5 liter glass reactor with with rotating speed stirring motor.

Four-blade Stirring Paddle

Four-blade Stirring Paddle

Four-blade Stirring Paddle is Propulsive stirring paddle suitable for any capacity glass reactor and single-layer, two-layer and three-layer glass reactor.

PTFE Stirring Paddle

PTFE stirring paddle feature in easy to clean without contaminating materials.

Send Your Inquiry

How Does Glass Reactor Work

How To Test the Glass Reactor Tightness?


Glass reactor can carry out rapid evaporation and fusion reaction.

It can be used in conjunction with various equipment such as low-temperature coolant circulating pump, low-temperature integrated machine, recirculating chillers, refrigerated heating circulator.

Here is the main methods to detect the seal of glass reactor.

Temperature Stress and Confidential Test

The test medium can be used as air, nitrogen, ideally inert gas.

Oxygen or other gases are prohibited.

Temperature Rise Pressure Method

The temperature rise and pressure process must be carried out slowly.

The heating rate does not exceed 80 degrees per hour.

Connect the inlet valve of the compressor or high-pressure pump to the glass reaction part during the pressure test.

Stay for 5 minutes when the working pressure interval rises, and stay for 30 minutes when it rises to the test pressure to observe the sealing condition.

The test pressure should be between 100% and 105%.

When conducting experiments in glass reactor, if air leakage is found, first reduce the pressure, then properly tighten the nuts and joints, and strictly prohibit fixing under high pressure.



Send Your Inquiry

How Does Glass Reactor Work

How Long Can the Glass Reactor be Kept Under Pressure?

When customers buy glass reactors, they are most worried about the sealing performance of the kettle and whether it can maintain pressure.

The glass reactor needs to be pumped to a negative pressure state to meet the experimental conditions before use.

The pressure range that the glass reactor can withstand: -0.1MPA-0MPA.

The glass reactor will be tested for pressure holding before leaving the factory, and each reactor can be tested for 2 hours under pressure.

After the customer receives the reactor, there will be problems that the pressure is not maintained and the sealing is not enough after the test machine.

At this time, we need to check whether the valve of each glass part is closed and installed.

If necessary, the customer applies vacuum grease to the flange seal. For specific operating procedures, please contact the manufacturer for professional guidance.

Send Your Inquiry

How Does Glass Reactor Work

What To Do After the Lab Glass Reactor Installation?


The lab glass reactor cool or heat the reactants at constant temperature through the oil bath.

But what to do after you have installed it?

Here we list the main procedures.

Check for Leaks on Lab Reactor

Check for leaks after a certain amount of nitrogen is introduced to maintain pressure for 30 minutes.

If there is any leakage, please use soap foam to find the leakage point of the pipeline and nozzle. After finding the leakage point, release the gas and tighten it, and then pass the nitrogen pressure test again to ensure that there is no leakage and then start to work normally.

Protection against Excessive Thermal Stress on Lab Glass Reactor

Water can be used for internal cooling through the cooling coil.

Please note that rapid cooling is prohibited to prevent excessive thermal stress from causing cracks on the cooling coil and the kettle body.

At the same time, when the temperature in the kettle exceeds 100 °C, the water jacket between the magnetic stirrer and the kettle cover should be connected with cooling water to ensure that the water temperature is less than 35 °C to avoid demagnetization of the magnetic steel.

Send Your Inquiry

How Does Glass Reactor Work

The Working Principle of explosion-proof jacketed glass reactor

Here is the truth:

You need to connect with a vacuum device, a high temperature or low temperature circulation device, etc. when putting explosion-proof jacketed glass reactor into use.

You can heat or cool the material during the stir process in the kettle at a constant temperature with hot solution or cooling liquid injected through the interlayer. 

When the material is heated and reacted, the evaporation efficiency can be improved under vacuum conditions.

The solvent vapor is cooled into a liquid when it passes through the glass condensing coil (a cooling device needs to be connected), which can be refluxed into the kettle or recovered through the valve at the lower part of the reflux elbow.

After the reaction is completed, the material can be discharged from the side discharge port at the bottom of the kettle.

Send Your Inquiry

How Does Glass Reactor Work

What is the pressure resistance of the laboratory glass reactor jacket?

Generally, the pressure of the overall jacket cannot exceed 1MP, otherwise the manufacturing difficulty will be increased due to the large wall thickness of the tank body and the jacket.

When the diameter of the laboratory glass reactor is large or the pressure of the heat transfer medium used is high, the latter three types can be used.

Send Your Inquiry

How Does Glass Reactor Work

How to Preserve Temperature for Your Glass Reactor

Here is the question:

Will the temperature drop affect the glass reactor?


If you are in the low temperature area, you should pay special attention to the fact that if the heat transfer medium used in the glass reactor interlayer and condenser tube is water.

You need to pay attention to the freezing condition at low temperature.

In a static state, the water will expand after freezing, which will burst the glass kettle body or the condenser tube.

Therefore, after the experiment, the water in the interlayer and the condenser should be drained to avoid freezing at low temperature.

Most people are facing the problem:

When the temperature drops, it will affect the heating rate of the glass reactor and reduce the efficiency.

Here we list the useful ways to solve this issue.

Use Special Insulation Cotton to Wrap the Glass Reactor

This is the simplest and most direct insulation method. It’s like we wear more clothes when it’s cold. This can effectively prevent excessive temperature loss and provide heating speed.

Properly increase the set temperature of the water-oil bath

Increased bath temperature allows glass reactor to accept higher temperature and shorten heating time.

When the instrument is close to the required operating temperature, lower the temperature of the oil bath to the actual operating temperature.

For example: when the actual operating temperature is 100°C, the temperature of the oil bath can be set to 120°C.

Then when the temperature of the reactor is close to 90 ℃, the temperature of the oil bath can be adjusted to 100 ℃.

This can effectively increase the heating rate and shorten the waiting time.

Do not fill up the solution in the glass reactor at one time

Add solution in batches to increase ramp rate.

The first liquid addition is about half of the capacity, and the temperature is close to the set temperature, and then the material is added to the reaction kettle.

You need to use the above three solutions to keep your glass reactor insulated during use according to your own situation.

Send Your Inquiry

How Does Glass Reactor Work


The sealing method of glass reactor include packing sealing and mechanical sealing.

Packing Sealing of Glass Reactor

The packing seal is the gland compresses the packing when the compression bolt is rotated, so that the packing is deformed and adhered to the surface of the shaft to achieve the purpose of sealing.

In chemical production, the shaft seal is easy to leak. Once the toxic gas overflows, it will pollute the environment and even cause an accident. Therefore, it is necessary to control the pressing force.

The elastic deformation of the filler should be large, so that the filler is close to the rotating shaft, and the shrinkage force is generated on the rotating shaft. At the same time, the packing is required to have enough turns.

Mechanical Seal of Glass Reactor

The mechanical seal is composed of four parts: dynamic and static ring, spring loading device and auxiliary seal ring.

Due to the action of the spring force, the dynamic tightness is pressed on the static ring. When the shaft rotates, the spring loading device and the moving ring and other parts rotate together with the shaft, while the static ring is fixed on the seat frame and does not move. The annular sealing end faces that the rings are in contact with prevent material leakage.

Although the structure of the mechanical seal used in the glass reactor is a bit complicated, the sealing effect is very good.


Send Your Inquiry

How Does Glass Reactor Work

What is The usage instruction of glass reactor

Here is the detail instruction for glass reactor:

  • Before installation, use, maintenance and inspection, please be sure to read all the contents of the manual carefully and use it correctly.
  • The power supply voltage must be the same as that specified for this instrument.
  • No-load operation is not suitable for high-speed operation.
  • The life of the electrical box is greatly affected by the surrounding temperature and humidity. Please keep the governor and motor dry.
  • Install the machine first, then wire it by a professional electrician, and turn it on. The ground terminal must be grounded.
  • Electric shock may still occur due to the discharge of the inverter or capacitor within 5 minutes after the power is turned off.
  • When working, pay attention to the impact damage to the glass by hard objects.
  • Be careful when connecting the vacuum pipe and water pipe, so as not to break the glass with excessive force and damage the human body.
  • When it is necessary to use a high temperature circulating oil bath, pay attention to the damage caused by high temperature to the human body. 

Send Your Inquiry

How Does Glass Reactor Work

What to consider when design glass reactor?


Safety is the most important factor for glass reactor users.

Glass Reactor manufacturers should consider safety issue when design glass reactor to ensure the safety of end users.

GWSI fully consider the safety of glass reactors in the design, and change from passive temperature control to active pressure control.

GWSI glass reactor equipped with vent holes to reach higher safety level.

GWSI also design and manufacture new type of explosion-proof double-layer glass reactor with a special explosion-proof motor and heating-cooling-refrigeration cycle device matching it.

You should avoid the reaction caused by gas in the usage process and try to keep the reaction kettle environment in negative pressure or normal pressure.

You should also pay attention to the glass reactor surface temperature and do not touch it to prevent burns or frostbite.

Send Your Inquiry

How Does Glass Reactor Work

What are the requirements for the glass reactor reaction material?

Reactants are also considered when designing single and double glass reactors.

The requirements of the reactants in the reactor are as follows.

Compatible or Incompatible Liquids

Mixing of liquids can be easily achieved by constant stirring or mechanical enterprise mixing, and heat transfer of the reaction mixture is carried out by convection data.

Heterogeneous mixing of liquids with solid reactants of appropriate particle size

In this case, it is not possible to mix these materials completely by the mixer. Once the mixing force is gone, the bulk material will settle to the bottom of the kettle, forming a layer of non-conductive material.

The following phenomena occur:

Carbonization of solid reactants, darkening of mixture color, waste of carbonized material, waste of heat and time, non-uniform polymerization, non-uniform polymer composition.

Due to the waste of materials and energy and the impact on the ecological environment, in order to avoid these problems, active materials can be added multiple times in two steps:

First step is to add the liquid reaction material into the reaction kettle, and heat the medium to a temperature slightly higher than the reaction temperature or the melting point of the solid reactant.

Slowly add solid reactants with continuous stirring to allow it to continuously increase the reaction or dissolve to avoid precipitation in the enterprise.

However, it is impossible to maintain this speed, and sometimes the phenomenon of precipitation and coking occurs.

And it takes us a long time to manage in this way to better complete the response.


Send Your Inquiry

How Does Glass Reactor Work

What is the features for the glass reactor glassware spare part?


The glass reactor glassware is made of high borosilicate material.

The glass reactor glassware part is heated to a temperature near the glass transition temperature after glass part processing.

Insulation and heating, eliminating the temperature increase and decrease of each part of the glass part.

Relax the stress and remove the stress in the glass parts, so that the appearance of the glass parts is smoother and more beautiful, and the service life is greatly improved.

It can withstand high temperature of 300 degrees Celsius and low temperature of -80 degrees Celsius.

A reliable glass reactor will not fry in high temperature environment and will not break in low temperature environment.

Glass Reactor production must be processed, tested and debugged in strict accordance with the corresponding standards.

According to the different production process and operating conditions, the design structure and parameters of the glass reactor are also different.

Send Your Inquiry

How Does Glass Reactor Work

How To Solve glass reactor Leakage problem?

Here is the truth:

In the case of improper installation or operation, you will often encounter the situation that the vacuum degree of the glass reactor is not well maintained.

In fact, you don’t need to be nervous and we will provide several ways to solve this problem in the right way.

Here we go.

  • When installing the glass reactor, the glass joints such as valves and covers should be coated with vacuum grease.
  • The ceramic bearing (static ring) in the stirring assembly should be tightened, and the inner wall of the assembly should be smeared with vacuum grease.
  • Mechanical seal ensures full tightening.
  • Check the looseness of the fasteners daily and tighten them with a wrench.
  • When the vacuum level of the system is found to be bad, you can use a watering can to spray each glass connection to check for leaks.

Send Your Inquiry

How Does Glass Reactor Work

How to choose the glass reactor stirring motor?


The selection of the glass reactor motor is very important.

If you use an inappropriate motor it will directly affect the production progress or damage the glass reactor.

Now we will introduce the tips on how to choose suitable stirring motor for your glass reactor.

Whether the material is viscous

The torque is determined according to the large viscosity of the material.

The reaction is dynamic and the viscosity will also change.

The diameter of the agitator blade and the frontal cross-sectional area, and the speed of the agitation.

Thereby determining the large torque of the motor at this speed to prevent overloading.

The maximum torque of the selected motor should be more than 1.5 of the maximum torque required for the stirring reaction to be safe, and to ensure that the footsteps are always carried out at the required speed.

Choosing a Motor Should Care About Torque, Not Power.

Motors of the same power, at the same speed, the torque is not necessarily the same, especially the AC motor and DC motor, the difference is very large.

As far as a single motor is concerned, the maximum torque is different at different speeds.

Glass Reactor Motor Rotating Speed

This need to decided on your budget.

If the speed requirements are not high, you can choose a geared motor to save your cost if your budget is small.

Is the Glass Reactor Motor Explosion Proof?

If your materials and products are flammable and explosive, an explosion-proof motor should be selected.

And this will cost you more budget compared to the ordianry type motor.

Frequency Control or Manual Adjustment For Glass Reactor Motor

Frequency conversion glass reactor motor will cost more than Manual Adjustment type.

You need to consider which type of motor you need for your glass reactor.

Send Your Inquiry

How Does Glass Reactor Work

How to care for the glass reactor condenser?


The condenser is an indispensable part of the glass reactor and plays an important role in quickly converting the vaporized gaseous substances into liquids and quickly transports the heat of the pipes to the air near the pipes.

Since the condensation replaces the cooling tower, the water treatment problem caused by a large amount of water is avoided.

Glass reactor condenser not only greatly reduces the energy conservation and environmental protection but also save your operating cost.

The glass reactor condenser need to be regularly cleaned and maintained in all directions to ensure you have a successful experiement.

Here is the steps on how to maintain the glass reactor condenser.

  • Check whether the glass reactor works normally, whether there are collision marks, and whether there is a problem with the sealing.
  • Check and remove the scale condensation affects on glass reactor productivity.

Send Your Inquiry

How Does Glass Reactor Work

The reason for the Jacketed Glass Reactor explosion

The explosion of the double-layer glass reactor is very dangerous, which threatens people’s life and property in the production test.

It is the top priority to understand the reasons for the explosion of the jacketed glass reactor and effectively curb the occurrence of this phenomenon.

Violent reaction of materials will cause the jacketed glass reactor to burst

Some chemical reactions are exothermic reactions.

When the reaction temperature exceeds the specified temperature, a large amount of gas is generated by the violent reaction of the material, which causes the pressure in the kettle to increase sharply, thereby deforming the inner wall of the double-layer glass fan and causes a large explosion.


  • During the operation, pay attention to control the change of the reaction temperature of the material to prevent the violent reaction caused by the ultra-high temperature.
  • A pressure relief device is installed to automatically depressurize when the pressure in the kettle increases.

Overpressure of the jacket will cause the jacketed glass reactor to burst


When chemical enterprises use the steam output by the power plant to supply heat for production, the steam output by the power plant can only be used after decompression.

Once the pressure reducing valve fails, or the safety valve of the steam buffer tank fails, the high-pressure steam output by the power plant is directly input into the double-layer glass reactor jacket.

The overpressure of the jacket is caused, and the wall of the kettle bulges out in a large area due to the external pressure.


  • On the basis of the existing pressure reducing device, a pressure reducing valve is installed, and the first-level pressure reduction is changed to the second-level pressure reduction, so as to achieve double insurance.
  • The working condition of the pressure reducing valve should be checked frequently, and if any problem is found, it should be replaced immediately.
  • Check whether the steam safety valve is in correct working condition, especially the spring safety valve should keep it working in a clean environment without corrosion or jamming.

Send Your Inquiry

How Does Glass Reactor Work

How to control the Glass Reactor temperature of the automatic control system?

The automatic control system of the glass reactor is a commonly used temperature control equipment in the industry.

During the cooling and heating process, the temperature change in the temperature control device is realized through the reciprocating cycle of the medium or refrigerant, so as to achieve the effect of cooling and heating.

Here we list main solutions to control the glass reactor temperature system.

  • The automatic control system of the reactor has automatic temperature sensing function. The controller adjusts according to the detected temperature and the set temperature value to achieve the purpose of controlling the temperature.
  • The pressure control generally consists of a high pressure control part and a low pressure control part. When the exhaust pressure exceeds a certain value, the high pressure control of the compressor will cut off the power supply of the compressor, and when the pressure value is lower than a certain value, the low pressure control will also cut off the power supply of the compressor and issue an alarm signal.
  • In order to prevent the compressor from malfunctioning during high-load operation, the installation of an overheating relay can effectively ensure the overload of the compressor. The lack of phase of a conventional three-phase motor will cause the motor to fail to start or be overloaded. An overload relay can be used to avoid damage to the motor due to lack of phase.
  • There is a temperature control system at the exhaust port. When the exhaust temperature is too high, the temperature control system will automatically cut off the circuit. Excessive equipment casing temperatures can also affect the compressor. The main reason is that due to the insufficient heat exchange power of the condenser, it is necessary to check its status to see if its air volume, water volume, and water temperature are normal, and check whether there is air entry or other stains in the equipment unit.

Send Your Inquiry

How Does Glass Reactor Work

Glass Reactor Trouble Shooting Guide

The glassware in the glass reactor is made of double-layer high borosilicate glass and it is popular among many R&D labs.

However, you need to pay attention to the solution of fault problems in the usage process.

Here we list the main technical trouble shooting guide for reference.

The power-on indicator of the glass reactor does not light up

After the power switch is turned on, the indicator light does not light up, you need to find professional electricians to solve the problems of disconnection, looseness, and inability to power on the power supply connected to the equipment, and then debug the equipment after solving the problem.

The glass reactor led is normal, but can’t rotate

The device is powered on and the power is displayed normally, but cannot be rotated.

The rotating shaft is rusted, you can communicate with the supplier in time.

In another case, due to the failure of the motor and power, a professional electrician is called for inspection and repair.

Glass reactor can not complete vacuuming

To check seals for wear, replace seals, maintain vacuum fat regularly.

Vacuum gauge and vacuum pump should also be cleaned regularly.

The vacuum of the glass reactor suddenly disappeared

During use, if the vacuum suddenly disappears during normal use, stop working immediately, confirm whether the glass is cracked, and contact the factory to replace the damaged parts.

Send Your Inquiry

How Does Glass Reactor Work

How does the glass reactor cool down?

The glass reactor is designed with double-layer glass.

The inner glass layer can be put into the reaction solvent for stirring reaction and the interlayer can be connected to different cold and heat sources for different temperature reaction.

In fact, the cooling and cooling of the glass reactor needs to be strictly operated according to the specified cooling method of the reactor.

This is very important for glass reactor.

If the operation is not follow right cooling way, it will have a bad effect on the glass reactor and you need to pay special attention.

At present, the common cooling methods of glass reactor include water cooling, oil cooling, etc.

Each cooling method has its own advantage.

Therefore, you should use the recommend cooling method required by the manufacturer.

Do not apply the rapid cooling method for your glass reactor. 

The glass reactor is a kind of pressure equipment.

It is actually in a special environment when it is working, so quick cooling is prone to lead cracks.

This is particularly bad for the glass reactor.

As the temperature difference stress will greatly damage the reactor from the physics view.

At present, the most common glass reactor cooling method is very simple.

During the cooling process, the user can use water to cool first through the cooling coil so that a better cooling effect can be achieved.

Send Your Inquiry

How Does Glass Reactor Work

How to Extend the life of laboratory reactor

Here we list practical tips to extend your laboratory glass reactor.

When cleaning the autoclave, special attention should be paid not to let water or other liquids flow into the heating furnace to prevent the heating furnace wire from burning.

If the jacket heat transfer oil is heated, be careful not to add water or other liquids when adding the heat transfer oil, and check the oil level of the heat transfer oil from time to time.

When the reaction temperature is determined, it is not allowed to change the temperature setting value during the heating process, so as to avoid a large overshoot of the temperature.

In order to ensure the normal operation of your lab glass reactor and the personal safety of the staff, please be sure to ground the wire.

When operating, you must pay attention to avoid damage to it due to human reasons, resulting in forced stoppage of production. At the same time, care should be taken to maintain the reactor after use, so as to prolong its service life.

Send Your Inquiry

How Does Glass Reactor Work

How to feed glass reactor


The glass reactor is designed with an independent reaction rack.

unlike the industrial reactor with a reaction bench, and the reserved feeding port of glass reactor is small, so the glass reactor feeding process is more difficult.

Here we introduce the practical ways to feed glass reactor.

The feeding amount should not be too large when feeding the glass reactor at one time.

You should evaluate the solvents based on reaction temperature, reflux and pressure for your glass reactor.

You need to add the appropriate amount of ingredients.

Generally, it should not exceed 2/3 of the glass reactor kettle body.

For solid reagents, it is recommended to prepare a solution and add it to the glass reactor.

Liquid reagents can be pumped into the glass reactor through the matching water pump or oil pump.

The reaction material is added to the reaction kettle through a constant pressure dropping funnel or a common dropping funnel, and a corresponding mobile ladder needs to be matched so that the staff can add the test material.

Send Your Inquiry

How Does Glass Reactor Work