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Appendix 2
1. TO INCREASE THE RATE OF SOLVENT EVAPORATION
AND SHORTEN DRYING TIME, TRY ONE OR MORE OF
THE FOLLOWING:
•
Use glass tubes and vials in place of plastic.
•
Preheat the SpeedVac™ chamber and rotor before
drying.
•
Use rotors with metal tube carriers instead of plastic
rotors (e.g., RH12-20, RH8-18).
These rotors conduct and transfer heat to tubes for
faster sample drying.
•
Prewash plastic tubes with methanol to remove
materials that inhibit or prevent evaporation of
aqueous samples.
2. TO KEEP VACUUM PUMP OIL CLEAN, TRY THE
FOLLOWING:
•
Empty solvent(s) collected in the Refrigerated Vapor
Trap as frequently as possible.
•
Change the oil in the vacuum pump when it
becomes brown in color or smells of solvents being
evaporated.
•
Attach a Thermo Scientific VPOF110 Vacuum Pump
Oil Filter/Recirculator to your vacuum pump when
evaporating acids (e.g., HCl, acetic, TFA) in the
SpeedVac™.
•
Attach a Thermo Scientific SCT120 Chemical Trap
with acid neutralization cartridge when evaporating
acids (i.e. HCl, acetic, TFA) in the SpeedVac™.
SpeedVac™ SPD210
Appendix 2 |
13
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