Thermo Fisher Scientific Introduces True Low-bleed Injection Port Septa

15 Jun 2009
Emily Marquez-Vega
Publishing / Media

Thermo Fisher Scientific Inc., the world leader in serving science, has introduced its Thermo Scientific TR-Green Injection Port Septa, which are individually molded for an exact fit in the GC inlet. The materials and process parameters used ensure a true low-bleed green septum and with an extended life-span, minimal coring and reduced stickiness decreases any chances of contamination and ensures optimized results are obtained.

Each batch of TR-Green Septa is subjected to a range of QC processes: a bleed test for low contamination; a stick test for low injection port adhesion; and a stable durometer test for consistent use. Designed to minimize contamination, a small CenterGuide™ dimple directs the needle into the same spot every time. The formation of only one channel path greatly reduces the possibility of any coring from the disruption of contiguous needle channels. Furthermore, this dimple facilitates low bleeds as core production is minimal, removing the chance of them being pushed into the liner.

As a key component of sample introduction, the TR-Green Septa have a life span of hundreds of injections and maintain an air-tight, leak-free seal for an optimized GC performance. For further information, please follow the company article webpage link on the right hand side of the screen.

Thermo Scientific Septa

Thermo Fisher Scientific

Septa are an important part of the GC instrument, providing a leak-free seal at the inlet, and require good durability, resealability and low bleed to optimize the performance of your instrument.Septa from Thermo Fisher Scientific are available in several types of materials, described below, to fit Thermo Fisher Scientific's GC and GC/MS instruments as well as other manufacturers’ instruments, matching different application needs.  TCS Triple layer with Teflon 280 °C CS Silicone with Teflon 200 °C Auto-Sep™ High Grade Silicone 320 °C Auto-Sep T™ High Grade Silicone with Teflon 350 °C BTO® Low Bleed Silicone 400 °C TR-Green High Temperature, Long Life 400 °C BTO septa are recommended for use with Thermo Scientific TRACE and FOCUS injectors, although other septa may also be used.

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