27201
Septum, PTFE/Butyl
PTFE/rubber (butyl (Pharma-Fix)), diam. × thickness 20 mm × 0.135 in., pkg of 100 ea
Synonym(s):
Septa, PTFE faced butyl
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About This Item
UNSPSC Code:
41122001
material
PTFE/rubber (butyl (Pharma-Fix))
description
Pharma-Fix septum
packaging
pkg of 100 ea
O.D.
13 mm
diam. × thickness
20 mm × 0.135 in.
compatibility
for use with 20mm crimp seal, 22mm hole cap, 22mm solid cap
General description
PTFE-fused septa are suitable to overcome the degradation, which happens due to prolonged high temperatures, commonly observed in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE face towards the column packing.
Application
PTFE-faced butyl septa may be used for headspace vials to assess sampling efficiency and breakthrough of methyl bromide on activated charcoal.
Septum may be used to seal vial during collecting urine samples for unmodified benzene analysis using HPLC method.
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