Labconco RapidVap Vacuum, N2 and N2/48 Evaporation Systems 7910015 - Manual (Page 28)

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Chapter 4: Using Your RapidVap
Product Service Domestic 1-800-522-7658, International 816-333-8811
Planning
Thoroughly understand procedures and the equipment
operation prior to beginning work. The unique
performance of the RapidVap Vacuum is dependent
upon the proper balance of heat, vacuum and vortexing
action. If the proper balance is not established, it is
possible to damage or lose a portion of the sample.
Therefore, if you are unfamiliar with the RapidVap or
are attempting a new protocol, it may be helpful to
make a trial run that is void of the sample you are
attempting to concentrate.
Select the size of the sample tube so it is compatible
with the block. Tubes should not be loose in the block.
Blocks are available with holes for various size tubes.
Refer to Appendix D: RapidVap Accessories for
available block sizes and pages 19 and 20 for
recommended usable tube volumes and vortex speeds.
The unique performance of the RapidVap N
2
is
dependent upon the proper balance of heat, gas flow
and vortexing action. If the proper balance is not
established, it is possible to damage or lose a portion of
the sample. Therefore, if you are unfamiliar with the
RapidVap N
2
or are attempting a new protocol, it may
me helpful to make a trial run that is void of the sample
you are attempting to concentrate.
Determine if the sample which is to be processed will
be allowed to go to dryness or whether the evaporation
is to cease prior to dryness. If the process should not go
to dryness, the proper sample tubes must be selected to
allow the desired amount of solvent to remain in the
tubes. Sample tubes are available for various end point
volumes. Refer to Appendix D: Accessories for
available sample tubes. Any style ground glass tube
may be used if the sample is to go to dryness, however,
flat bottom tubes evaporate the quickest.
V
N