Page 82 - Illustrated Pocket Dictionary of Chromatography

78 FILTER, IN-LINE

This is a combination inlet filter (0.2-mm PTFE) and degassing filter. An aspiration
tube is connected through the off-center union, which pulls a vacuum through the
filter and degasses the mobile phase as it is pulled into the pump head.

filter, in-line Used in HPLC; placed between the outlet filter and
the injector. These filters should also be placed after the pressure
transducer so that if and when they clog, the increased pressure can

This in-line filter consists of an embedded stainless steel frit held in a low-volume
housing. In-line filters are positioned between the pressure transducer and the
injector and are there to remove particulates generated by the piston seals and
other components in the pump.