GC/HPLC Vial Septa Selection Guide

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Optimise performance and results by choosing the right septum for your application:

PTFE Septa

Exceptional solvent resistance

Only suitable for single injection use – not recommended for sample storage before or after injection

Not resealable

The most economical septa

Maximum service temperature 260°C

PTFE/Silicone Septa

Excellent resealing capabilities – highly recommended for multiple injections and sample storage

Autoclavable and excellent resistance to coring

PTFE chemical resistance until pierced then the septa will have the compatibility of silicone

Temperature range -40°C to 200°C

Pre-slit PTFE/Silicone Septa

Reduces the possibility of coring with blunt tipped needles or for applications using a thin gauge needle

Used to prevent vacuum from forming inside the vial

Temperature range -40°C to 200°C

PTFE/Silicone/PTFE Septa

Recommended for multiple injections due to above average resealing capabilities

Autoclavable and excellent resistance to coring

Recommended for demanding applications such as internal standards, trace analysis or applications where there will be a long time between injections

Temperature range -40°C to 200°C

PTFE/Red Rubber Septa

The most economical septa used in routine analysis

Easy to pierce with moderate resealability

PTFE chemical resistance until pierced then the septa will have the compatibility of rubber

Not recommended when retaining samples for further analysis or for multiple injections

Temperature range -40°C to 110°C

Moulded Polypropylene Septa

Only suitable for single injection use – not recommended for sample storage before or after injection

Not resealable

Temperature range 0°C to 130°C

This is the end of the introduction of GC/HPLC Vial Septa Selection Guide. I hope it can help you.