UD Technologies > Industrial Glass Equipment > Large Scale Rotary Evaporator-Rotovap-Industrial Vacuum Rotavap
Rotary Evaporator 100 Liter
Rotary Evaporator-Rotovap-Rotavapor-Rotavap-

Rotary Evaporator-Rotovap- Vacuum Rotavap

UD technologies are manufacturer, Supplier, and exporter of Industrial and Large Scale Rotary Vacuum Evaporator from Vadodara, India, and Suppliers to Indore, Hyderabad, Chennai, Mumbai, and Ahmedabad

Rotary Film Evaporator is also known as rotavapor or rotovap or rotavap

Principle of Rotary Film evaporator

The  Thin-film Evaporator principle is the most universal method, as it is an efficient and gentle way to separate liquids. The rotating flask continuously covers a large surface area with a thin film, which is ideal for rapid heat transfer. Fortuitously, the film also ensures uniform heat distribution without local heating. In Rota, vapor Forms reach the cold surface of the Condenser, and condensate is collected in the receiver. Solvent removal produces Gentle concentration . Initially, evaporating Flask needs to rotate at a slower RPM due to more volume of feed. As the evaporation proceeds and volumes in the evaporating flask are lesser, RPM requires to be increased, At the end of Concentration, RPM is required to be maximum to remove solvent from the concentrate or paste. Similarly, the temperature of the Bath is required to be increased .If the temperature of the material in the Flask is to be kept at a Minimum Temperature to stop Degradation, One can take the help of a Vacuum Controller to vary the vacuum level to keep the boiling point low.

The facility to work in this evaporator under full vacuum further facilitates evaporation at as low a temperature as possible. These features render rotary film evaporators to be ideally suited for the evaporation of heat-sensitive material. It is equally successful for the evaporation of suspension in crystallization processes drying of powder/granules etc. Evaporating flask due to rotary motion forms a thin film and the vapor rising gets condensed and collected in the receiver flask. Solvent removal causes concentration and rotary motion resulting in very less contact time with the heat transfer surface.

Our Large Evaporators are user Friendly and a Single Person can remove Hot Evaporating Flask.

Rotary Evaporator is available with Four Options considering safety and Validation purposes
Standard Non-Flameproof Rotary Evaporator- Standard Flameproof Rotary Evaporator-GMP Non-Flameproof Rotary Evaporator-GMP Flameproof Rotary Evaporator

Salient  Features of  Rotovap :

1. Movable Model, sleek, compact with minimum footprint and available with 10 liter,20 liter;50 liter, and 100 liter
2. Glass Distillation setup and Equipment can be customized as per applications and process Requirements
3. Best vacuum sealing with Dry Mechanical Seal. All Contact parts are of Glass or/and PTFE, which extends their life and reduces downtime
4. A special arrangement is provided such that a single person can dismantle the hot flask safely
5. Operator Friendly control panel-Higher rated microprocessor based with a large digital display
6. Rugged Instruments to have a long service life
8. Models available with a parameter of Safety and validation
9. Glass Distillation setup can be customized as per the Client’s Requirement
10. Combo models are available for Solid-Liquid Extraction and Concentration

UD Technologies understands your requirements for Rotary Evaporation and can supply a Customised Rotary Film Evaporator and helps in Optimising Process conditions to get fast, efficient concentration with Maximum Solvent recovery.

In pursuit to give more useful Information, we have prepared a Chart of Boiling Points at different vacuums for different Solvents. We recommend 25 deg C Higher Bath Temperature than Boiling Point and 25 Deg c Lower Temperature than Boiling Point. Considering the Limitation of Coolant Availability,it is desired to vary the vacuum level referring to coolant temperature. You can check vacuum levels at different boiling points in the Chart/Table.


Please check the specifications of the Rotary Evaporator- Capacity Wise in the following Tabs.

Rotary Evaporator 5 liter-20 liter-50 liter Specifications

 Rotary Film Evaporator 5 liter

A Rotary Vacuum Evaporator of 5 liter is designed and developed for Solvent removal and concentration for Heat Sensitive Materials. Rotary Extractor 5 liter is its variant in which Simultaneous Solid-Liquid Extraction and Concentration of Extract takes place. This reduces Valued Operation Time

Considering Research and development purposes, In Rotary Evaporator small Evaporating flask like 2 liter-1 liter-500 ML can be attached for sample evaporation

Technical specifications 

Model RE –05-SW -02
Electrical connection req. 230V, 50 Hz, (1 Phase neutral)
Total Power consumption 2 KW
Rotation drive 0.18 HP, Three Phase, Weatherproof TEFC Motor
Bath Lift 0.12 HP, Three Phase, Weatherproof, TEFC motor
Speed Control 20 – 200 RPM with Electronic control and digital display-Frequency Converter
Heater 2 KW, Weatherproof
Bath heating control Electronic, On-Off with PT-100 & Digital display
Bath Movement Motorized
Vapor temperature PT-100 with Digital display
Sealing of Vapor Shaft Borosilicate -Glass, and PTFE with Mechanical Seal
Bath temperature Up to 180oC
Process Timing Indication Digital
Electric Control Panel With push buttons, switches and electrical safety protection, Weatherproof
Bath Double walled Stainless steel with insulation
Glass Evaporation Set up 5-liter Evaporating Flask, 0.2 m2 upward condenser, 2-liter receiver with drain valve, Soxhlet Extractor
Housing and trolley MS Powder coated, Castor Wheels Movable and Lockable-German Make
Supporting Structure MS powder coated
Flanges and Gasket MS powder coated Flanges and Gasket- 100% PTFE

Different Glass distillation assemblies are available on request. We also offer GMP and Flameproof Options. Generally, in GMP option SS 304 Rotary Evaporator is offered. We also offer SS 316 Rotary Evaporator

Rotary Vacuum Evaporator – 20 liter

Large Scale Rotary Evaporators from UD Technologies

Voltage 230 V (1Ph, N, G) /200 V (1Ph, N, G)/440 V (3Ph, N, G)
Frequency 50 Hz.(60 Hz on request)
Power consumption 4400W(In case of 4KW Heater)

In the case of Flameproof; All electrical instruments and electrical parts covered in Flameproof Enclosures duly certified by CMRI-Dhanbad for Gas Group I IIA and IIB

ATEX Compliant Models are available

Safety-coated glassware Yes, Except for the evaporating flask -Optional

Over temperature-Separate monitoring circuit with manual reset Error if
protection of the bath temperature is above  the set value

Soft start
Stop in case of Overload

Bath Displacement Limited by limit switch
For, Flammable Solvents Flameproof version is suitable for Gas group I, IIA and IIB

GMP Model is available
FAT Documentation shall be provided

Bath temperature Yes (1 °C steps)
Vapor temperature Yes (1 °C steps)
Set rotation speed Yes (1 RPM step)
Set bath temperature Yes (1 °C steps)
Actual vacuum-Optional (1 mm Hg steps)-Other units available on request
Set vacuum-Optional- (1 mm Hg steps)-Other units available on request

3.5 Liter Water condensation with 40 deg c temperature difference between Bath and boiling
Vacuum 750mm Hg with RPM 90


Rotary Film Evaporator -50 liter

Rotary Evaporator 50 liter

The UD large-scale evaporators 20-50-100 are perfectly designed for a lot of different distilling processes, from standard evaporation without vacuum control up to complex distillation processes with vacuum control.

Aspects such as safety, convenience, and cost savings have been considerably taken into account during the development of Industrial scale evaporators. This is reflected in various unique product advantages.

Rota Evaporator 50 liter allows Chemist to distill 5.5 Litre/hr Water equivalent or 16-liter Acetone with 40 deg c Temperature Difference

Leakage Rate: Less than 1 mbar/minute

GMP Model is available
FAT Documentation shall be provided

Bath temperature Yes (1 °C steps)
Vapor temperature Yes (1 °C steps)
Set rotation speed Yes (1 RPM step)
Set bath temperature Yes (1 °C steps)
Actual vacuum-(Optional) (1 mm Hg steps)-Other units available on request
Set vacuum (Optional) (1 mm Hg steps)-Other units available on request

Leakage Rate: Less than 1 mbar/minute

Material of Construction
Gear head CI Powder coated and SS 304 parts
Heating bath Stainless steel 1.4301 (AISI 304)
Heating element Stainless steel 1.4301 (AISI 304)
Glass Borosilicate 3.3
In contact with product FDA compliant materials

Consumption Depends on the solvent to get condensed; 250 liters/hr to 450 liters/ hour at 5 deg C Temp. Difference
Restriction max. 2.7 bar abs. without pulsation
Our models have four variants as shown in the model selection chart

GMP Model is available
FAT Documentation shall be provided

5.5 Liter Water condensation with 40 deg c temperature difference between Bath and boiling Point and under
Vacuum 750mm Hg and RPM 60. Leakage Rate: Less than 1 mbar/minute

For Further Information

Industrial rotary evaporator

Solvent Losses during Batch Distillation

Rotary Evaporator Solvent chart

Vacuum Controller for Rotary Vacuum Evaporator

If You Need Any Engineering Solutions, We Are Available For You

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