Centrifugal Concentration Vacuum Pump Solutions

The high performance and convenience of VACUUBRAND^® pumps and systems makes them an excellent choice for most centrifugal concentration applications. VACUUBRAND^® offers a wide variety of pumps for excellent, reproducible results. When selecting the best pump for your lab, consider the following issues.

How much vacuum do I need?
Centrifugal concentration generally requires greater pump capacity than other evaporative applications because it is usually performed at room temperature. Fortunately, VACUUBRAND^® diaphragm pumps are available with enough power to evaporate at room temperature solvents with boiling points as high as that of DMF.  The performance demands of most tabletop concentrators are often well served with one of VACUUBRAND^®’s 2mbar vacuum pumps, the MD1C or MD4C NT. Both of these pumps are powerful enough to evaporate DMF. Select the MD1C for supporting smaller concentrators and the MD4C NT with its higher flow rate for larger benchtop concentrators. For very high boiling point solvents, such as DMSO or ethylene glycol, rotary vane technology may be required. We suggest the unique RC6 Chemisty-HYBRID pump for deeper vacuum with maximum convenience.

Do I need solvent recovery?
Large centrifugal concentrators often come with cold traps, reducing the need for integrated solvent recovery with the pump. Concentrators without cold traps should have solvent recovery integrated with the pump to prevent pump contamination and pollution of the laboratory. When using a small concentrator without a cold trap, choose the MD1C+AK+EK. It provides excellent flow rates at working vacuum to effectively operate a smaller concentrator without a cold trap – something not possible with competitive pumps – and captures solvent vapors itself.

Are my samples prone to bumping?
When samples often bump in a centrifugal concentrator, control may be necessary to prevent cross-contamination. Depending on the volatility, flow control – as in our PC101 NT or PC201 NT may be sufficient. For more volatile solvents, use our VARIO™ systems that adjust vacuum levels automatically.

What about larger concentrators?
Recently there have been several “mega” sized concentrators developed for combinatorial chemistry and the drug discovery marketplace.  Please contact BrandTech Scientific for assistance in selecting the best pump for these applications.