Vacuum technology

VARIO® chemistry pumping unit in action

The PC 3010 NT VARIO select pumping unit precisely controls the vacuum level in order to achieve unparalleled process control. With its combination of high pumping speed and fractional millibar ultimate vacuum, this pump is suitable for demanding applications with even high boiling point solvents at low temperatures. This pump is regularly used to support floor-standing rotary evaporators, vacuum drying ovens, distillation columns, and other similar work in miniplants, kilo labs, and scale-up facilities.

The integrated VACUU·SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process as necessary.

In addition, the VARIO control algorithm maintains the desired vacuum level by running the motor only as fast as necessary. This prevents bumping and foaming, makes the pump whisper quiet, and extends maintenance intervals. The inlet separator, made of glass with a robust protective coating, prevents particles and liquid droplets from entering the pump, preventing damage and extending pump life. And the exhaust vapor condenser allows for nearly complete recovery of solvents when used with a chilled water line or recirculating chiller for economical recycling and environmental protection.

Product features

• Ultimate vacuum: 0.6 mbar
• Ultimate vacuum with gas ballast: 1.2 mbar
• Max. pumping speed 50 Hz: 12.8 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Automatic boiling point detection and adjustment of the vacuum for short process times
• Ideal for evaporation of large amounts of high-boiling solvents even at low temperatures
• Extraordinary diaphragm life for minimum operational and servicing costs
• Excellent environmental compatibility through low energy consumption and efficient solvent recovery

VARIO® chemistry diaphragm pump in action

The MV 10C NT VARIO select pump is an excellent solution for those who need high pumping speed and need fractional-millibar ultimate vacuum to work with high boiling point solvents even at low temperatures. Combined with the reliability born of its chemical resistant fluoropolymer and perfluoroelastomer wetted materials, this pump delivers reliable performance for floor-standing rotary evaporators, vacuum drying ovens, vacuum distillation columns, and other similar applications.
The integrated VACUU·SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process as necessary.
With VARIO control, the pump runs only as fast is necessary. This extends the maintenance intervals and makes the pumping unit whisper quiet

Product features:
• Ultimate vacuum: 0.6 mbar
• Ultimate vacuum with gas ballast: 1.2 mbar
• Max. pumping speed 50 Hz: 12.8 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Automatic boiling point detection and adjustment of the vacuum for short process times
• Ideal for evaporation of large amounts of high-boiling solvents even at low temperatures
• Extraordinary diaphragm life for minimum operational and servicing costs

VARIO® diaphragm pump in action

Four-stage diaphragm pumps like the MV 10 NT VARIO select are excellent solutions for continuous, oil-free pumping of non-corrosive gases to vacuum levels that are only a fraction of a millibar. With its high pumping speed, this pump is an excellent option for higher gas load applications or rapid pump down of vacuum chambers.

All wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The MV 10 NT VARIO select automatically adapts its motor speed to hold the desired vacuum level. That also means the pump is whisper-quiet and generates ultra-low vibrations, and has high leak tightness. The highly flexible fabric-reinforced double FKM diaphragm is ideal for extended operating life.

The VARIO® design includes the variable speed pump and the VACUU·SELECT® vacuum controller with an external gauge head. The demand-responsive motor speed control on VARIO® models further extends the already long lifetimes of diaphragms and valves. And oil-free operation means that there is no risk of contamination from backstreaming.

Product features

• Ultimate vacuum: 0.3 mbar
• Max. pumping speed 50 Hz: 11.1 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Extraordinary diaphragm life for minimum operational and servicing costs
• Contamination-free pumping and evacuation
• High pumping speed, extraordinary ultimate vacuum and TURBO·MODE for use as backing pump for turbo pumps

VARIO® chemistry pumping unit in action

The PC 3012 NT VARIO select pumping unit precisely controls the vacuum level in order to achieve unparalleled process control. With its combination of high pumping speed and deep ultimate vacuum, this pump is suitable for demanding applications with even high boiling point solvents. This pump is regularly used to support floor-standing rotary evaporators, vacuum drying ovens, distillation columns, and other similar work in miniplants, kilo labs, and scale-up facilities.

The integrated VACUU·SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process as necessary.

In addition, the VARIO control maintains the desired vacuum level by running the motor only as fast as necessary. This prevents bumping and foaming, makes the pump whisper quiet, and extends maintenance intervals. The inlet separator, made of glass with a robust protective coating, prevents particles and liquid droplets from entering the pump, preventing damage and extending pump life. And the exhaust vapor condenser allows for nearly complete recovery of solvents when used with a chilled water line or recirculating chiller for economical recycling and environmental protection.

Product features

• Ultimate vacuum: 1.5 mbar
• Ultimate vacuum with gas ballast: 3 mbar
• Max. pumping speed 50 Hz: 14.3 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Automatic boiling point detection and adjustment of the vacuum for short process times
• Meets high vacuum requirements for large quantities of most high boiling solvents
• Extraordinary diaphragm life for minimum operational and servicing costs
• Excellent environmental compatibility through low energy consumption and efficient solvent recovery

VARIO® diaphragm pump in action

This three-stage diaphragm pump is a powerful solution for continuous, oil-free pumping of non-corrosive gases to a vacuum level as deep as 1.5 mbar. With its high pumping speed, this pump is an excellent option for higher gas load applications or rapid pump down of vacuum chambers. All wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases.

The MD 12 NT VARIO select automatically adapts its motor speed to hold the desired vacuum level. That also means the pump is whisper-quiet and generates ultra-low vibrations, and has high leak tightness. The highly flexible fabric-reinforced double FKM diaphragm is ideal for extended operating life.

The VARIO design includes the variable speed pump and the VACUU·SELECT vacuum controller with an external gauge head. The demand-responsive motor speed control on VARIO models further extends the already long lifetimes of diaphragms and valves. And oil-free operation means that there is no risk of contamination from backstreaming.

Product features

• Ultimate vacuum: 1.5 mbar
• Max. pumping speed: 50 Hz: 13.4 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Extraordinary diaphragm life for minimum operational and servicing costs
• Contamination-free pumping and evacuation
• High pumping speed and excellent ultimate vacuum and TURBO·MODE for use as backing pump for turbo pumps

VARIO® chemistry pumping unit in action

These powerful pumps feature exceptionally high pumping speed. The PC 3016 NT VARIO select pumping unit is a proven solution for evaporations with large amounts of low boiling point solvents.

The integrated VACUU·SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process as necessary.

With VARIO control, the pump runs only as fast as necessary. This extends the maintenance intervals and makes the pumping unit quiet. The inlet separator, made of glass with protective coating, prevents particles and liquid droplets from entering the pump. The exhaust vapor condenser provides nearly 100% recovery of solvents for economical recycling and environmental protection.

Product features

• Ultimate vacuum: 70 mbar
• Ultimate vacuum with gas ballast: 100 mbar
• Max. pumping speed 50 Hz: 19.3 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Automatic boiling point detection and adjustment of the vacuum for short process times
• Suitable for evaporation of large quantities of low-boiling solvents
• Extraordinary diaphragm life for minimum operational and servicing costs
• Excellent environmental compatibility through low energy consumption and efficient solvent recovery

"VARIO® chemistry diaphragm pump in action

The ME 16C NT VARIO select pump is an excellent solution for continuous, oil-free pumping of corrosive gases and vapors. This single stage pump provides an advantageous combination of high pumping speed and 70 mbar ultimate vacuum that make it a great choice for evaporation of large quantities of low boiling point solvents.

With pump heads constructed from chemical resistant fluoroplastics, and the proven PTFE sandwich diaphragm, our chemistry rated pumps feature unrivaled service intervals.

The integrated VACUU·SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process to meet process requirements.

With VARIO control, the pump runs only as fast as is necessary. This extends the maintenance intervals and makes the pumping unit quiet.

Product features:

• Ultimate vacuum: 70 mbar
• Ultimate vacuum with gas ballast: 100 mbar
• Max. pumping speed 50 Hz 19.3 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Automatic boiling point detection and adjustment of the vacuum for short process times
• Suitable for evaporation of large quantities of low-boiling solvents
• Extraordinary diaphragm life for minimum operational and servicing costs

VARIO® diaphragm pump in action

The MV 2 VARIO select is a four-stage diaphragm pump that offers continuous, oil-free pumping of non-corrosive gases at very low vacuum levels, making it suitable for a wide range of applications. It is constructed with durable materials like aluminum and stainless steel and incorporates a variable speed motor that adjusts to maintain optimal vacuum levels quietly and with minimal vibration.

The pump features a fabric-reinforced double FKM diaphragm designed for an extended operating life, and the VARIO® system includes precise vacuum control through the VACUU·SELECT controller and an external gauge. This setup ensures efficient performance and longevity of the pump components, particularly under the rigorous conditions required in physics and analytics applications where a clean, high vacuum is essential.

Product features

• Ultimate vacuum: 0.3 mbar
• Max. pumping speed 50 Hz: 3.3 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• automatic boiling point detection and adjustment of the vacuum for short process times
• extraordinary diaphragm life for minimum operational and servicing costs
• contamination-free pumping and evacuation
• excellent ultimate vacuum, and even better ultimate vacuum with VARIO® version in TURBO·MODE for use as backing pump for turbo pumps

VARIO® diaphragm pump in action

Designed for continuous, oil-free pumping of non-corrosive gases, this three-stage pump achieves vacuum levels as deep as 1 mbar. Crafted with aluminum, stainless steel, and carefully selected plastics, its durability ensures a wide range of applications. With whisper-quiet operation and ultra-low vibrations, the MD 4 VARIO select adapts its motor speed for precise vacuum control, while its fabric-reinforced double FKM diaphragm ensures extended life.

The VARIO design, featuring variable speed and the VACUU·SELECT vacuum controller, offers unmatched flexibility. Ideal for physics, analytics, and more, these pumps excel in contamination-free evacuation. Plus, with customized options available, meet your specific needs effortlessly. Enjoy extraordinary diaphragm life, minimum operational costs, and precise vacuum control with the VARIO® diaphragm pump.

Product features

• Ultimate vacuum: 1 mbar
• Max. pumping speed 50 Hz: 5.7 m3/h
• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
• Extraordinary diaphragm life for minimum operational and servicing costs
• Contamination-free pumping and evacuation
• Excellent ultimate vacuum and TURBO·MODE for use as backing pump for turbo pumps

The VARIO® select DUO pumping units are consisting of a combination of two individual VARIO® pumping units, connected in parallel on the suction side and driven synchronously by one vacuum controller VACUU•SELECT.

The vacuum is controlled accurately. The speed of the two individual pumps is exactly adjusted to the vacuum needs. The controller allows both fully automatic distillations without any user pre-settings as well as specific and reproducible program sequences. The integration into existing control systems via digital and analog interfaces is also possible. The consequent design to highest chemical resistance provides the ideal prerequisite for universal use in chemistry and pharmacy - without any operating fluid such as water or oil.

Performance features

• automatic adaptation of the vacuum level throughout the process for high process reliability and unattended operation
• short process times due to powerful vacuum pump and accurate (hysteresis-free) vacuum control, even for large amounts of steam
• removable vacuum controller VACUU•SELECT, variable to arrange, easy to use with multilingual full-text menus, simply integratable by digital or analog interfaces
• unmatched diaphragm life with minimal operating and maintenance costs
• excellent environmental friendliness due to minimized energy consumption, no operating fluid needs (oil, water) and efficient solvent recovery

• Precise VARIO® control via motor speed adjustment in combination with VARIO diaphragm pumps
• Classic two-point vacuum control in connection with an external in-line solenoid valve
• Graphic user interface simplifies laboratory work
• Predefined applications for quick, save time and guarantee reproducible results
• Application editor allows easy customization
• Accuracy of measurement: < +- 1 mbar/hPa/torr / +- 1 digit (after adjustment, constant temp.) mbar/hPa/torr
• Dimension LxWxH: 152x127x41 mm
• Interface: Ethernet / USB (Type A)
• Vacuum sensor: VACUU•SELECT Sensor
• Cable length connection: 2 m

The RC 6 chemistry-HYBRID pump is a combination of a two-stage rotary vane pump and a two-stage chemistry diaphragm pump for optimized corrosion resistance. The diaphragm pump maintains the oil reservoir under vacuum in order to keep the partial pressures of solvent vapors at levels below their condensation points and to reduce largely the concentration of oxygen and corrosive gases. Therefore the RC 6 chemistry-HYBRID pump has a much higher solvent vapor pumping capability and resistance to aggressive gases than conventional rotary vane pumps.
Performance features:
• Reduced internal corrosion, even when working with corrosive vapors
• Oil changes typically reduced 90% or more compared with rotary vane pumps alone
• Most economical solution: In practical operation a cold trap is often no longer necessary
• Ease of maintenance due to telescopic design
Technical Data:
• Number of heads: 2
• Inlet connection: small flange KF DN 16
• Ultimate vacuum with gas ballast: 0.01 mbar

The powerful mid-size one-stage RE 9 rotary vane pumps are the ideal solution for a wide range of laboratory and process applications that require high pumping speed.

Performance features

• very high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

The powerful mid-size one-stage RE 9 and two-stage RZ 9 rotary vane pumps are the ideal solution for a wide range of laboratory and process applications that require high pumping speed.

Performance features

• very high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

The one-stage pumps RE 2.5 are high-performance rotary vane pumps with extra compact design and low weight. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium gas flow rate.

Performance features

• high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

The one-stage RE 2.5 and two-stage RZ 2.5 are high-performance rotary vane pumps with extra compact design and low weight. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium gas flow rate. The RZ 2.5 is also available combined with the oil mist filter (FO) and the VS 16 valve as a package.

Performance features

• high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

The one-stage RE 2.5 and two-stage RZ 2.5 are high-performance rotary vane pumps with extra compact design and low weight. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium gas flow rate. The RZ 2.5 is also available combined with the oil mist filter (FO) and the VS 16 valve as a package.
Performance features
• high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

These powerful rotary vane pumps feature an unusually compact design and low weight for pumps of this capacity. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium to increased gas flow rate.

Performance features

• high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

These powerful rotary vane pumps feature a particularly compact design and low weight for pumps of this capacity. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium to increased gas flow rate. Various packages including pump, oil mist filter, etc. are available. Rotary vane pumps are used when an ultimate vacuum between a few mbar and down to 10-3 mbar has to be attained. Typical applications are degassing, lyophilization, fine vacuum distillation and drying chambers.

Product features:

• high flow rates even at vacuum levels approaching ultimate vacuum
• high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
• vacuum-tight at switch-off; external anti-suckback valve not needed
• large oil volume: Long intervals between oil changes
• ease of maintenance due to telescopic design

Technical data

• Max. pumping speed 50 Hz: 5.7 m3/h
• Ultimate vacuum: 2 x 10-3 mbar
• Number of stages: 2
• Vacuum controller: VACUU•VIEW extended
• Water vapor tolerance with gas ballast: 40 mbar
• Max. back pressure (abs.): 1.1 bar
• Inlet connection: Small flange KF DN 16 / hose nozzle DN 10 mm
• Outlet connection: Hose nozzle DN 8-10 mm
• Dimension (LxBxH (mm): 420x230x240
• Weight: 17.8 kg
• Items supplied: Pump oil filled and completely mounted, ready for use, with manual, with oil mist filter FO, valve VS 16 and vacuum gauge VACUU•VIEW extended.