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SU860011

Supelco

Crimp seal with PTFE/butyl septum (Pharma-Fix)

aluminum seal (with 10 mm center hole), PTFE-faced butyl septum, diam. × thickness 20 mm × 3.0 mm, pkg of 100 ea

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About This Item

UNSPSC Code:
41122001
NACRES:
NB.11
Pricing and availability is not currently available.

material

PTFE-faced butyl septum
aluminum seal (with 10 mm center hole)

hardness

50 (Durometer: shore A)

packaging

pkg of 100 ea

O.D.

20 mm

diam. × thickness

20 mm × 3.0 mm

fitting

thread for 20 mm

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Application

Crimp seal with PTFE/butyl septum (Pharma-Fix) may be used to seal standard residual solvents for the determination of residual solvents in drug substances using headspace gas-chromatography coupled with flame ionization detector (HS-GC-FID).[1]
PTFE-faced butyl septum was used in sealing headspace vials to analyse the sampling efficiency and breakthrough of methyl bromide on activated charcoal using GC.[2] It was also used for sealing water samples during headspace analysis with GC-FID, in a study which demonstrates cross-validation of methods used for methyl-tert-butyl ether (MTBE) analysis.[3]

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Cross-validation of methods used for analysis of MTBE and other gasoline components in groundwater.
Lacorte, S., et al.
Chromatographia, 56, 739-744 (2002)
Measuring residual solvents in pharmaceutical samples using fast gas chromatography techniques.
Rocheleau J-M, et al.
Journal of Chromatography. B, Biomedical Sciences and Applications, 805(1), 77-86 (2004)
Sampling and stability of methyl bromide on activated charcoal.
Gan, Jianying, et al.
Journal of Agricultural and Food Chemistry, 43, 1361-1367 (1995)

Questions

  1. ¿Perdonen, cual es la permeabilidad de los tapones de butyl/PTFE?

    1 answer

    1. There is no assigned value but the butyl septum has ultra-low permeability. It can be used with many organic solvents: acetic acid (<50%), acetonitrile, acetone, alcohols, DMSO, phenol. Not compatible with alkanes, benzene, carbon disulfide, chlorinated solvents, cyclohexane. It has a maximum temperature of 200 °C.

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