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350
www.restek.comSeptum Selection Guide
Materials
Compatibility
Incompatibility
Resealability
Max. Temp.
Red Rubber
acetone, alcohols, DMF,
ACN, benzene, chloroform, heptane,
very good
90 °C
(synthetic)
DMSO, ether
hexane, pyridine, THF, toluene
PTFE/
PTFE: resistance until punctured
aromatics, carbon disulfide,
very good
90 °C
Natural Rubber
Rubber: acetone, ACN, alcohols,
chlorinated solvents,
diethylamine, DMF, DMSO, phenol
hydrocarbon solvents
PTFE/Silicone
PTFE: resistance until punctured
ACN, benzene, chloroform,
very good
205 °C
PTFE/Silicone/PTFE
Silicone: acetone, alcohols, DMF,
heptane, hexane, pyridine,
DMSO, ether
THF, toluene
Polyethylene
Good resistance to solvents and
hydrocarbon solvents
one-time use
175 °C
weak acids or bases. Unreactive with
most chemicals, but some solvents
cause softening or swelling.
Gray Chlorobutyl
acids or bases, water solutions,
aliphatic or aromatic hydrocarbons,
very good
100 °C
buffer solutions, oxygenated
halogenated solvents, mineral oils,
solvents, vegetable oils
strong acids
Abbreviations: ACN = acetonitrile, DMF = dimethylformamide, DMSO = dimethylsulfoxide, THF = tetrahydrofuran
NOTE: This chemical resistance chart is intended only as a guideline. It does not cover all compounds or all solvents. Tests were done at room temperature on pure, single solvents, and
there is no data on solvent combinations. Always confirm the compatibility of your vial, closure, and chemical combination prior to sample preparations.
Vials
Septum Selection Guide...............................................
.350Instrument Reference Chart........................................
.351Vial Size Quick Reference Chart.......................
.352–353Microsampling Vials & Inserts...........................
.354–356Crimp-Top Vials......................................................
.357–358Screw-Thread Vials................................................
.359–362Certified Vials.....................................................................
.363WISP Vials..................................................................
.364–365Headspace Vials......................................................
.366–367Versa Vials...........................................................................
.368VOA Sampling Vials.........................................................
.369Filter Vials, Sampling Valves for Vials.......................
.370Crimpers & Decappers...................................................
.371