VacuuBrand's Vario Select series chemistry vacuum pumps are oil-free, whisper quiet, economical, reliable and durable, make these vacuum pumps easy to use, efficient, and extremely durable. They use a combination of the speed controlled VARIO chemistry diaphragm pumps and the VACUU·SELECT vacuum controller to guarantee automatic pinpoint vacuum control to eliminate manual process monitoring, with optimal process times and reproduceable results. 

This intuitive control has a broad range of useful functions to ensure that your process runs smoothly and in the shortest possible time.  

Control by vacuum valve   

Vario Control by pump motor speed

Applications

For the evacuation, evaporation and pumping of aggressive gases and vapors in chemical, biological and pharmaceutical laboratories that require a precise vacuum:  

• Rotary evaporators and bio-reactors:  The PC 3001 VARIO select is ideal for vacuum applications with high boiling solvents. The hysteresis-free vacuum control prevents superheating and foaming to protect valuable process samples. The controller enables automatic detection of vapor pressures and automatic adjustment of the vacuum level to the process requirements. For large evaporation flasks (> 5 l), the PC 3004 VARIO select with a maximum flow rate of 4.6 m3/hr is ideal for handling large quantities of vapor in a short time.

• Vacuum drying chambers:  Vacuum drying chambers are used for drying very sensitive substances and when it is necessary to guarantee excellent residual drying. They generally need a very good ultimate vacuum depending upon the degree of drying, maximum acceptable temperature and the solvents used.

• For small volumes (drying chamber < 30 l) the PC 3001 VARIO select meets these requirements.

• Large quantities of vapors can only be handled with pump systems with a sufficiently large volume flow rate. Our product recommendations:  PC 3004 VARIO select (drying chamber up to 60 liters) or PC 3012 VARIO select (drying chamber up to 120 liters).

• Vacuum concentrators:  With PC 3001 VARIO select even high boiling solvents, or samples that are prone to bumping, can be easily concentrated using automatic evaporation. Quick, easy, and without any user input. For solvents with extremely high boiling points of more than 150 °C we recommend the PC 3003 VARIO select with an ultimate vacuum of 0.6 mbar. 

• Oil-free vacuum for kilo labs: In kilo labs and pilot plants, materials are produced in quantities of a few hundred grams to several kilograms for pharmaceutical development, safety studies and early clinical trials for new drugs. Based on their powerful flow rates, our high performance chemistry pumping units PC 3012 VARIO select or PC 3010 VARIO select are perfectly suited for these applications.

• Operation in a VACUU·LAN® local area network:  VACUU·LAN vacuum networks make it possible to supply high performance vacuum to several different applications from one vacuum pump (e.g., PC 3002 VARIO select, PC 3004 VARIO select, PC 3012 VARIO select or PC 3016 VARIO select). This is a money- and space-saving solution when several users are working with vacuum in one laboratory and avoids the many drawbacks of a central (“house“) vacuum supply.

Features

• Wide choice of options and configurations provide ideal solutions for chemistry vacuum systems, including corrosive chemistry compatible pumps, one or two port design, with accessories like inlet catchpot and/or solvent recovery,

• Operate absolutely oil free to eliminate this source of contamination,

• Drive space is hermetically sealed from the pumping chamber to protect mechanical parts from corrosion.

• Low lifetime cost-of-ownership due to the low power consumption, exceptionally long diaphragm life and a maintenance-free drive system:    

• Laboratory vacuum process power consumption is reduced by up to 90% in comparison to vacuum pumps with constant motor speed,

• Optimized motor speed control minimizes wear on the pumps. The already long diaphragm life time of approximately 15.000 working hours is increased considerably further, resulting in exceptionally long service intervals.

• Ideal for clean applications as there are no sliding components in the gas path, so operates completely free of abrasion eliminating most of the particulate impurities and contamination frequently generated inside of scroll or piston pump, 

• Pumping speeds range from 2 m3/h to nearly 20 m3/h to support vacuum applications ranging from individual laboratory applications such as rotary evaporators, multi-user lab vacuum networks, and replacement of rotary vane pumps in kilo labs and pilot plants.  

• Available pump models offer ultimate vacuum ratings between 70 mbar and even down to 0.6 mbar.  

• Standard non-chemistry models use highly flexible FKM double diaphragms with fabric reinforcement to improve long term stability,

• Chemistry models with “C” suffix use perfluoro elastomer (PTFE) and aluminum for all wetted materials  to increase reliability and operating life when using corrosive chemicals. This makes them ideal for pumping of aggressive gases and vapors: 

• PTFE sandwich diaphragms and valves, 

• Internal tubing and fittings made of PTFE/ETFE/ECTFE compounds

• Exceptional diaphragm lifetimes with ultra-durable PTFE sandwich design

• Head cover and clamping disc made of fluoro compounds with stability core for unsurpassed long-term performance, 

• Whisper quiet and very low vibration for improved working environment and low disturbance of benchtop applications, 

• Compact design requires minimal benchtop space, 

• Each vacuum connection is provided with a manual flow control valve to regulate the effective pumping speed, and reliable check valves prevent interference between applications.

• New features of "NT" designated models: 

• Patented drive system for extra quiet, ultra-low-vibration operation,

• Patented valve mounting system to simplify service access,

• Smooth surfaces for easy cleaning,

• Innovative connections in the patented NT models ensure very low leak rates for excellent flow rates under vacuum and long-term performance stability, even after thousands of hours of service, 

• Integrated VACUU·SELECT controller has an easy-to-use, application based interface that covers all common lab applications to make setting the optimum process pressure a simple task. 

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• Sensors to ensure a trouble free evaporation without superheating solvents, even low or high boiling ones. Detects boiling pressure and automatically adjusts the pumping speed to maintain solvent evaporation process control, resulting in optimal process times, minimal noise, maximum process efficiency, with low energy consumption and improved service intervals for wear parts like diaphragms and valves.

• Use manual set-point-control for simple processes,

• Run fully automated distillations,

• Manual set-point control for simple processes,

• Application, desired vacuum, and other parameters can also be combined or controlled individually.

• Predefined applications simplify laboratory work and training,

• Create your own application with simple drag-and-drop editing using graphical user interface,

• User interface with the VACUU·SELECT® Controller is as simple as drag & drop the desired process steps into the right sequence adjust the parameters, like target pressure or duration, save your customized application, make it a Favorite, select it from the Favorites menu, and hit Start.  Fully automatic evaporations at the touch of a button.  

• VARIO technology controls the vacuum precisely and efficiently via motor speed. Power consumption, maintenance and noise are exceptionally low. The outlet catchpot and solvent condenser combine to prevent solvent vapor emissions into the lab, allowing for nearly full recovery of solvents.

   

• Most pumps approved for ATEX equipment category 3 in the vapor path, with "EX" versions available for category 2 applications, (For more information call us at 888-222-2935.) 

Specifications

• Maximum back pressure 1.1 bar,

• Ambient Temp. Range (Operation): 10°C - 40°C (50°F to 104°F),

• Ambient Temp. Range (Storage): -10°C - 60°C (14°F to 140°F),

• Relative Humidity (Operation): 30% - 85%, non-condensing,

• Max. altitude: 2000M / 6500ft,

• Physical Attributes:

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