• Purification material on-site conditioning typically requires a process
gas flow control and monitoring device, such as a delivery line throttling
valve and a flow meter. Such components are not provided as standard
equipment. The purchaser is solely responsible for obtaining and
installing these components.
For conditioning, a minimum volume, V (liters), of the process gas is
required. If a pure process gas (100% concentration) is used at a flow rate
of F (slpm), the minimum time for gas flow, T minutes, during conditioning
is given by:
T minutes = V/F
If a carrier gas is being used to dilute the process gas, then a longer
conditioning time is required; the time increases proportional to the inverse
of the dilution percentage (A% – percentage of active ingredient). For
example, if the gas is actually a blend containing A% of the process gas,
then the minimum time, T minutes, is given by:
T minutes = V/((A%/100) F)
Select the appropriate gas group by active ingredient (see following pages).
Generally, the active ingredient is the Intended Process Gas as specified
in the Part number of the purifier. Contact Pall Corporation SLS for
technical assistance.
