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Merck

20638

Sigma-Aldrich

Thermogreen® LB-2 Septen, feste Scheiben

diam. 5 mm ( 3/16 in.), pkg of 50 ea

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About This Item

UNSPSC-Code:
41115718

Verpackung

pkg of 50 ea

Durchmesser

5 mm ( 3/16 in.)

Kompatibilität

for use with Agilent/HP On-Column capillary port

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Allgemeine Beschreibung

Septum is a very important component of syringe injection system. They are usually fabricated from elastomeric, self-sealing materials such as silicone rubber, neoprene or fluoroelastomers. It is suitable to conveniently introducing the sample without causing the system to leak. Improper septa decomposes under the high-temperature conditions of capillary inlets causing baseline disruption and ghost peaks in a chromatogram.
Eine verbesserte Version der ursprünglichen Thermogreen LB-1 Septen.
  • Sehr geringes Ausbluten über eine große Bandbreite von Einlass-Temperaturen (100 °C bis 350 °C) hinweg.
  • Bereits konditioniert und gebrauchsfertig
  • Einfachere Penetration der Nadel und hohe Toleranz gegenüber Einstichen (ideal für Autosampler)
  • Exklusive Gummi-Formulierung von Supelco

Anwendung

Thermogreen® LB-2 Septa is suitable for the following applications:
  • To minimize extraction onto or loss of analytes off the solid phase microextraction (SPME) fiber from the vial during analysis by GC-MS.
  • Thermo-resistant septa is used in GC instrument to avoid carrier gas leaks, extraneous peaks and phthalate contamination.
  • Thermo-resistant septa along with thick needle protector is used in GC instruments to avoid damage irreversibly caused by microsyringe.
  • It is also used in the influent sampling ports in gas chromatographs.

Rechtliche Hinweise

Thermogreen is a registered trademark of Merck KGaA, Darmstadt, Germany

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Analysenzertifikate (COA)

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Elefteria Psillakis et al.
Chemosphere, 54(7), 849-857 (2003-11-26)
The sonochemical degradation of aqueous solutions containing low concentrations of six phthalate esters at an ultrasonic frequency of 80 kHz has been investigated. Ultrasonic treatment was found capable of removing the four higher molecular mass phthalates (di-n-butyl phthalate, butylbenzyl phthalate
Solid-phase microextraction (SPME) for rapid field sampling and analysis by gas chromatography-mass spectrometry (GC-MS).
Hook, Gary L., et al.
TrAC, Trends in Analytical Chemistry, 21, 534-543 (2002)
Effect of periods of non-use on biofilter performance.
Martin, F. Jason, and Raymond C. Loehr.
Journal of the Air & Waste Management Association (1995), 46, 539-546 (1996)
Robert L. Grob, PhD, Eugene F. Barry, PhD
Modern Practice of Gas Chromatography, 471-472 (2004)
Elefteria Psillakis et al.
Journal of chromatography. A, 999(1-2), 145-153 (2003-07-30)
A simple and efficient liquid-phase microextraction (LPME) technique using a hollow-fibre membrane, in conjunction with gas chromatography-mass spectrometry has been developed for the extraction and analysis of six phthalate esters in water samples. Parameters such as extraction solvent, agitation of

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