Labconco RapidVap Vacuum, N2 and N2/48 Evaporation Systems 7910015 - Manual (Page 32)

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Chapter 4: Using Your RapidVap
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Heat Setting Guidelines
The evaporation rate achieved by the RapidVap is
dependent upon a variety of factors. These include the
nature of the solvent, the temperature, the pressure in
the vacuum system or the flow of the nitrogen gas in
the RapidVap N
2
, the volume of sample, shape of tubes
and vortex speed. Because of the multiplicity of factors
it is impossible to give “typical” performance data.
By design, the RapidVap Vacuum model can be run at
lower temperature settings than the RapidVap N
2
model. This is because the decrease in pressure will
cause the sample to evaporate at a lower temperature.
As a general guideline, to speed the evaporation
process, the RapidVap temperature should be set as
high as possible as long as the temperature will not
damage the sample or cause the sample to bump.
In the RapidVap Vacuum models, generally the
evaporation rate will be optimized with the block
temperature set and preheated 20 to 40°C above the
boiling point of the solvent at the operating pressure.
V