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Septa Selection Guide
PTFE
 Recommended for single injection application.
 Ideal for use in MS applications
 Excellent solvent resistance and chemical compatibility
 Does not reseal upon punching
 Not for Long-term sample storage
PTFE/Silicone
 Recommended for multiple injection and sample storage
 Excellent resealing
 PTFE chemical resistance until punctured, then will have the
chemical compatibility of silicone
 Working temperature range from -40°C to 200°C
 Pre-slit PTFE/Silicone
 Prevent vacuum formation in vials
 Eliminates coring from bottom draw-port needles
 Good resealing capabilities
 Recommended for multiple injections
 PTFE chemical resistance until punctured, then will have the
chemical compatibility of silicone
 Working temperature range from -40°C to 200°C
Vials Selection Guide
 Type 1, 51-expansion borosilicate glass
 type-2, 33- expansion glass
 Deactivated glass (DV)
Treated with gas phase reactive organosilane to produce a
hydrophobic glass surface. Can be stored indefinitely.
 Headspace Vials
Uniform glass thickness which insures even heat distribution for
consistent sampling reliability.
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