Catalog 2010 Technology for Vacuum Systems - Chiron

Choosing vacuum equipment
For gel dryers
■ Gel dryers make more limited demands on vacuum system than many lab applications. The ultimate vacuum needed
depends on the gels used and the degree of drying needed. In most cases, two-stage diaphragm pumps with 7 mbar
Process requirements
■
medium vacuum requirements
■ relatively high flow rates. There may be high leak rates in gel
drying, so the flow rate should be watched closely throughout the
process
■ condensate and droplet separation between the gel dryer and
pump
■
vacuum regulation is beneficial to keep the gels from tearing
Demands made of the vacuum pump
■
excellent chemical and condensate compatibility
■ ultimate vacuum of as much as 7 mbar (for SDS-PAGE below 10%)
or to 1.5 mbar (for SDS-PAGE greater than 10%)
■
sufficient volume flow rate: 2 m³/h or higher
■ vacuum inlet separator (AK) to protect the pump from particles
and liquid droplets
for major condensate accumulation, it is helpful to have a vacuum
■ inlet separator (AK) and an exhaust emission condenser (EK) to
minimize environmental and laboratory air pollution with solvent
vapors
■
ultimate vacuum are ideal.
vacuum regulation, such as with a manual flow-control valve
Recommended systems
Ultimate vacuum 7 mbar vacuum for sequencing gels, for example, with SDS-PAGE up to 10%, including
gels that may have been previously operated with water jet pumps:
MZ 2C NT +2AK or MZ 2C NT +AK+EK
pg. 36, 37
PC 101 NT for manual vacuum control
pg. 40
Ultimate vacuum to 1.5 mbar for high boiling point solvents at low temperatures, or for gradient gels with
SDS-PAGE >10%:
MD 4C NT +2AK or MD 4C NT +AK+EK
PC 201 NT for manual vacuum control
Choosing vacuum equipment
pg. 54, 55
pg. 57
For coolant-free electronic condensing, select the PeltronicTM condenser with either the MZ 2C NT +2AK or
the MD 4C NT +2AK, as appropriate to your vacuum needs
pg. 77
Further information at www.vacuubrand.com
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