Septa
Septa are available in a variety of materials and thicknesses. PTFE Natural Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/RR. PTFE/High Performance Rubber is a highly pure synthetic red rubber septum that provides a reduced background level for specific GC applications, employing sensitive detectors such as ECD or NPD. PTFE/Silicone Septa (T/S) has high-quality, low background/blank value, 100% synthetic pure silicone septa.
VWR® Septa/stoppers 20 mm for SPME Crimp Neck Vial ND20
Supplier: LA PHA PACK
VWR®, Septa, Butyl injection stopper, grey
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VWR® Septa 12 mm for Screw Neck Vials ND13
Supplier: LA PHA PACK
VWR®, Septa, PTFE virginal, Hardness: 53° shore D, Thickness: 0,25 mm
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Septa, Merlin Microseal™
Supplier: Restek
Microseal septum incorporates two separate sealing mechanisms. These sliding seals eliminate septum coring and the resulting accumulation of septum crumbs in the injection port liner. The septum uses a 23-gauge (0,63 mm, 0,025”) needle or probe with a blunt, truncated conical tip. Since the syringe plunger end details are determined by manual or autosampler compatibility. The advantages of the septum include elimination of septum coring, longer life, consistent and low needle insertion force.
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Septa 8 mm for screw neck vials, 8-425
Supplier: THERMO NATIONAL SCIENTIFIC
These septa are designed to be used with 8 mm screw thread caps.
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Premium non-stick BTO septa
Supplier: Restek
These septa are preconditioned and ready to use. Bleed and temperature optimised; ideal for demanding GC and GC/MS applications.
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Thermolite® septa
Supplier: Restek
These septa are preconditioned and ready to use.
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#: 20864.320
Supplier: VWR Chemicals
#: 83640.320
Supplier: VWR Chemicals
#: 31770.294
Supplier: VWR Chemicals
#: 1.00030.2500
Supplier: Merck
#: 83645.320
Supplier: VWR Chemicals