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Vacuum Oven Vacuum Solutions
How much vacuum do I need?
Vacuum ovens typically require a pump with deeper vacuum levels than other heated applications because the evaporative effect of elevated temperature is often offset by the poor thermal transfer of the oven environment. How much flow do I need? Vacuum ovens also require higher vacuum pump flow rates than other lab applications due to the relatively large sample capacity of most vacuum ovens. The MZ2C NT + 2AK vacuum pump is an excellent selection for labs with smaller vacuum ovens (<1.0 cubic foot in capacity). Its performance, small footprint, and integrated solvent recovery make it a popular choice for volatile solvents. Evaporation of higher boiling point solvents, however, may require a more powerful pump, such as the MD1C+AK+EK. Laboratories with larger ovens (one or more cubic feet in capacity) do well with the PC201 NT. It can generate vacuum levels for evaporation of most solvents, and its high flow rate reduces process times. Insufficient flow rate can cause internal condensation inside the oven. If this happens, the temperature of the oven should be reduced to slow evaporation. Use a Cold Trap? Using a cold trap for solvent recovery gives users greater flexibility when selecting a pump for vacuum ovens. The cold trap reduces vapor loads, and eliminates the need for solvent capture by the pump. These applications are typically best-served by a stand alone pump such as the compact, economical MD1C vacuum pump.
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