F-940 Instruction Manual rev. 11/26/2019
1554 NE 3
rd
Ave, Camas, WA 98607, USA
95
Phone: (360) 833-8835
www.felixinstruments.com
Appendix I: Sampling from a
Jar
The following photos utilize a glass jar
customized with the addition of a Vacutainer®
septum.
The F-940 can draw and analyze a headspace
gas sample from a rigid jar by incorporating an
input probe and output flow into the septum to
compensate for removed airspace, thus
preventing a vacuum from occurring.
1. With the F-940 in Trigger mode, allow
the instrument to purge and stabilize in
ambient air before inserting the
sampling probe into the sample jar
septum.
2. Once stabilization is complete, insert
the sample needle probe connected to
the F-940 inlet into the jar septum.
3. To prevent a vacuum, insert another
probe from the outtake of the F-940 into
the septum. The loop back tube
provided with the F-940 can be utilized
for this purpose. There are now two
needle probes inserted into the septum.
Summary of Contents for F-940
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