Rtx015-16-628

350

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Septum 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...............................................

.350

Instrument Reference Chart........................................

.351

Vial Size Quick Reference Chart.......................

.352–353

Microsampling Vials & Inserts...........................

.354–356

Crimp-Top Vials......................................................

.357–358

Screw-Thread Vials................................................