Chapter 2: Prerequisites
Product Service 1-800-522-7658
7
Original instructions
On the other hand, samples dissolved in methylene chloride, a low boiling point
solvent, can be efficiently concentrated using a water aspirator.
The nomograms in
Chapter 4: Using Your RapidVap
will help determine the
boiling point of a solvent at pressures below atmospheric. This can serve as a
guide to the appropriate vacuum source.
TO INSURE THAT AGGRESSIVE SAMPLES USED IN THE
RAPIDVAP DO NOT DAMAGE THE VACUUM PUMP, IT IS
RECOMMENDED THAT ALL INTERNAL WETTED PARTS
ARE PTFE OR PTFE COATED. TO PREVENT A HAZARDOUS
CONDITION, THE PUMP MUST BE SUITABLE FOR
HANDLING THE VAPORS FROM THE SOLVENTS THAT
WILL BE EVAPORATED IN THE RAPIDVAP.
CAUTION: When selecting the vacuum pump it is very
important to consider the flammability of the solvents that will
be used. If the solvents are flammable, an explosion proof
vacuum pump is recommended.
ATTENTION: Lors de la sélection de la pompe à vide, il est très
important d'examiner l'inflammabilité des solvants qui seront
utilisés. Si les solvants sont inflammables, d'une pompe à vide à
l'épreuve des explosions est recommandé
Vacuum Line Traps
When using a mechanical pump which is not corrosion resistant, a trap must be
used in the vacuum line to prevent damage from solvent vapors. This is most often
a condenser-type trap chilled with dry ice/acetone. When evaporating acids, it is
advisable to include a soda lime acid trap in the vacuum line. This adds additional
protection for the pump.
Several components within the RapidVap are made from
stainless steel and can be degraded if exposed to acids. Before
evaporating acids, be sure to contact Labconco.
Plusieurs composants du RapidVap sont en acier inoxydable et
peuvent être dégradés s'ils sont exposés à des acides. Avant de
s'évaporer acides, n'oubliez pas de contacter Labconco.
A moisture trap and radioisotope trap are also available. When evaporating high
boiling point solvents, a liquid trap should be positioned between the RapidVap
and the vacuum pump to prevent liquid from entering the pump. Refer to
Appendix D: RapidVap Accessories
for ordering information.
!
!
