

Evaporating large numbers of samples efficiently is an important step in sample preparation in e.g. solid phase extraction in the analytical laboratory, in combinatorial chemistry, high throughput screening or when employing new technologies. Samples must be processed rapidly, reproducibly and in a controlled manner to ensure their structural integrity is maintained. With its sophisticated pump technology for the precise control of evaporation (complying with GLP and GMP), CombiDancer can evaporate highly volatile solvents such as methanol or ethanol, water or less volatile solvents such as dimethylformamide (DMF) or dimethylsulfoxide (DMSO), or solvent mixtures even containing water, both rapidly and reproducibly.
CombiDancer utilizes a combination of heating, vortexing,
and vacuum in the evaporation process unlike the
more common centrifugation technique. Vortexing has
various advantages over centrifuging - it enlarges the
evaporation surface distributing the heat evenly in the
sample and there is no compression of the gas phase.
CombiDancer can work with any vacuum pump, however
we recommend the Vacuubrand PC 3003 VARIO
diaphragm pump for the precise control of the evaporation
process.
The samples are uniformly heated by infrared lamps (1,000 W). An independent compartment heater prevents the condensation of solvents with high boiling point in the vacuum chamber. The actual temperature can be measured directly in the sample by means of a PTFE-coated temperature sensor. All heating, vortexing and vacuum parameters can be programmed and controlled separately.
Vortexing, heating and vacuum are the keywords to a high efficient evaporation of solvents.
Vortexing:
Heating:
Vacuum:
Sample Racks. For high volume routine operation a wide variety of sample racks are available. Up to 2 deep well plates can be placed directly on the vortexer. All racks are made of anodized aluminium. Racks can be customized to fit your specific tube or a combination of different sized tubes.

| External Dimensions (Lid closed) | 765x695x470mm |
| External Dimensions (Lid open) | 930x695x470mm |
| Weight | ~ 80 kg |
| Vacuum Chamber | Stainless Steel V4A, 360 mm diameter |
| Maximal Sample Height | 150 mm |
| Connector to vacuum pump | DN25 |
| Maximal load | 4.5 kg (including racks and base plate) |
| Vortexing Speed | 200 -1200rpm (dependent on weight) |
| Power requirement | 230 V, 50/60 Hz, 940 VA |
| Temperature Control Range: | Ambient - 80°C |
| Relative Humidity (non condensing) | <90% |
| Solvent | Sample volume (ml) | Tube type | Number of tubes | Temperature (°C) | Evaporation Time |
| Hexane | 20 | 50 ml conical | 36 | 40 | 20 |
| Water | 0.5 | 1.5 ml microfuge | 256 | 40 | 56 |
| Ether derivatives | 3.4-4 | 10 ml tube | 96 | 30 | 40 |
| Methanol | 8 | 20 ml scintillation vial | 69 | 40 | 40 |
| Water/Ethanol 50/50 | 4 | 16x100 tube | 144 | 40 | 120 |