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Congratulations on your purchase of a Labconco RapidVap. Labconco
manufactures two types of RapidVaps - one utilizes vacuum and the other utilizes
nitrogen as an aid to evaporation. Each model is available for operation on 115V
or 230V.
Superior evaporation rates are achieved by the unique blending of several gentle
forces on the sample. Samples are subjected to a gyrating motion causing the
liquid to form a vortex configuration which greatly increases the surface area and
hence the ability to evaporate. A precisely controlled amount of thermal energy
can be supplied to the sample to heat it. In the vacuum model, the sample can be
subjected to a decreased pressure by the application of a regulated vacuum. In
summary, the vacuum model RapidVap performance is maximized by increasing
the sample’s surface area, increasing temperature and decreasing pressure.
In the RapidVap N
2
, a stream of nitrogen or dry gas is directed downward onto the
surface of the sample. This reduces the partial pressure directly over the liquid to
speed evaporation and helps remove the solvent as it evaporates. In summary, the
RapidVap N
2
performance is maximized by increasing the sample’s surface area,
increasing temperature and directing gas over the sample.
The gyrating motion imparted to the sample causes other, more subtle effects to
occur. Excellent mixing of the components in the liquid sample is obtained. Also,
as the liquid forms the vortex shape, a centrifugal force is established which forces
the liquid outward against the tube walls. This helps prevent bumping and in turn
allows the evaporation rate to be optimized.
The microprocessor which controls the operation of the heater and the motor
provides excellent regulation and reproducibility of protocols. The end of the run
can be signaled by the automatic end point system or by a manually preset timer.
Nine different protocols can be stored in memory so exact test parameters can be
easily repeated.
