Sample Vial Septa And Caps - Agilent Technologies 7697A Operation Manual

Sample Vial Septa and Caps

Septum material Compatible with
PTFE/butyl rubber PTFE resistance until punctured,
then septa or liner will have
compatibility of rubber (ACN,
acetone, DMF, alcohols,
diethylamine, DMSO, phenols)
PTFE/silicone rubber PTFE resistance until punctured,
then septa will have compatibility
of silicone (alcohol, acetone, ether,
DMF, DMSO)
* Approximate. Refer to manufacturer's recommendations.
Operation
There are two types of septa used with crimp caps and
screw- on caps, each with different resealing characteristics
and different resistance to solvents.
Incompatible with
Chlorinated solvents,
aromatics,
hydrocarbons, carbon
disulfide
ACN, THF, benzene
chloroform,
pyridine, toluene,
hexane, heptane
Vial caps come with or without an internal safety feature
that allows the vial to vent if the internal vial pressure
exceeds about 310 kPa (45 psi).
In general, do not use crimp caps or septa more than once
for headspace analysis.
Refer to your Agilent catalog for consumables and supplies
for acceptable vial types, or visit the Agilent website at
www.agilent.com/chem.
Sample Vials
Resealability Maximum
temperature*
Good < 125 °C
Average < 180 °C
5
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