Hello All,

A quick question.  We keep on noticing that on our GC the Valco tee
fittings for the He back-flush (for the column), do not stay tight.
I realize that overtime fittings will become lose do to vibration
(our GC sits on top of the IRMS), but I am observing this occurring
after a standard ramping cycle of the ovens (80 to 300 C, and then
back down).

Is there a fix?  Every morning I come into the lab, and the fittings
are a little lose after running a few samples the night before (and
backgrounds are high).

Thanks,

Bill






--
William Anderson
Assistant Professor
Geology Department and Southeast Environmental Research Center
Florida International University

Mailing address:
Geology Dept., PC 344
FIU
11200 S.W. 8th Street
Miami, FL  33199
USA

office: 305 348 2693, sec. 348 3572
SERC stable isotope lab:  305 348 3044
fax: 305  348 3877
email: [log in to unmask]