Labconco CentriVap micro IR Vacuum Concentrators 77010 Series - Manual (Page 17)

Chapter 4: Using Your CentriVap micro IR
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Temperature Setting Guidelines
The evaporation rate achieved by the CentriVap micro IR is dependent upon a
variety of factors. These include the nature of the solvent, the temperature set
point, the temperature mode and the pressure in the vacuum system.
The Centrivap micro IR was designed to quickly evaporate small samples at
elevated temperatures. The temperature can be set from 35°C to 65°C. As a
general guideline, to speed the evaporation process, the CentriVap temperature
should be set as high as possible as long as the temperature will not damage the
sample or cause the sample to bump. Typically the fastest evaporation rates will
be obtained using the IR heat mode, IR/Heat second, then Heat. At lower
temperatures, depending on the mode of heat and the type of samples, vapor can
sometimes condense inside the chamber slowing the evaporation process. For
instance, at temperatures below 50°C aqueous samples can begin to condense
inside of the chamber, becoming worse at lower set points. When evaporating at
lower temperatures we recommend running in the IR/Heat mode. This mode
distributes the heat more evenly around the chamber reducing the potential for
condensation. As always when attempting a new protocol, it is recommended that
a trial run be made.
Time Setting Guidelines
The CentriVap micro IR Concentrator has a timer that can be set from 00:00 to 99
hours and 59 minutes. The run time setting is used to turn the concentrator off
after a set period of time. This stops the rotation, turns off the heater, vacuum
pump and bleeds vacuum from the system. The 00:00 setting allows the unit to
run at the set point temperature until manually turned off.
The tables in Appendix C: CentriVap micro IR Specifications indicate
approximate times required to evaporate various common solvents. Actual times
must be determined by the user.
CentriVap micro IR Controls
The control panel for the CentriVap micro IR is shown below with a description
of its functions.