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Supelco

Thermogreen® LB-2 Septa, solid discs

diam. 11 mm ( 7/16 in.), pkg of 50 ea

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packaging

pkg of 50 ea

diam.

11 mm ( 7/16 in.)

compatibility

for use with Agilent/HP 5880, 5890, 6850, 6890
for use with PerkinElmer Sigma series, 900 & 990, 8000, AutoSystem, Clarus 500
for use with Varian 1078, 1079
for use with Varian SPI
for use with Varian capillary injectors

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General description

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.
An improved version over the original Thermogreen LB-1 septa.
  • Extremely low bleed over a wide range of inlet temperatures (100 °C to 350 °C)
  • Already conditioned, ready to use
  • Easier needle penetration and high puncture tolerance (ideal for autosamplers)
  • Rubber formulation exclusive to Supelco

Application

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.

Legal Information

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

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Abdullahi A Yusuf et al.
The Journal of experimental biology, 221(Pt 13) (2018-05-20)
One of the responses that honey bee workers can make in the event of queen loss is to develop into false queens. False queens are workers that exhibit both behavioural and physiological traits similar to those of a true queen.
Robert L. Grob, PhD, Eugene F. Barry, PhD
Modern Practice of Gas Chromatography, 471-472 (2004)
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)
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
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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