GC vial septum

The septum you choose for your autosampler vial can impact sample evaporation, sample security, needle bending and blockages, and instrument down time. Don’t let the complexities of septa selection slow you down. Use the simple online Thermo Scientific SureSTART Selection Guide to find the right septa and vial for your analysis.

Aijiren's range of chromatography vials is composed of the most commonly used ' clear glass vial' and for your light sensitive sample matrices 'the amber vial' alternative. Explore Aijiren's full range of chromatography vials including vial caps and vial septa to help you find just the right solution to protect and store your samples for GC

Autosampler vials may seem insignificant when compared to the sophisticated analytical instrumentation most laboratories use, but the incorrect vial, cap or septa can contribute to problems that can decrease productivity and reproducibility. Potential Problems Caused by Using Incorrect Vial/Cap/Septum: • Loss of analyte due to evaporation

Apr 21, 2012 · Siloxanes from GC vials and septa show an increase in intensity as the samples sit in the gc vial. Solution: use freshly made samples for trace level analysis. The inlet septum is a source of siloxanes two ways: 1) siloxanes bleed from the septum as a result of heat. The septum purge on a GC is usually sufficient to take care of this.

Each lot of certified kits is tested by HPLC/UV and GC/MS against 15 critical parameters. Certificate of Conformance included in every pack. Kits are delivered shrink-wrapped to ensure product cleanliness. Superior quality 1st hydrolytic class glass (Type 1) in clear and amber. Fixed insert or conical base vials for limited volume sampling.

GC and LC experiments can impact the septa integrity. Use our Chemical Resistance and Septa Solvent Compatibility Sections for more details Contents Choosing the right septa chart 2 Septa selection guide Septa material: General Chromatography vials 3 Septa material: 20 mm headspace septa 4 Temperature stability chart 4 Seal properties 5

The associated 9 mm vial screw cap comes with your choice of septa constructed from either PTFE/silicone, PTFE/silicone/PTFE or PTFE/natural red rubber. Our screw vials and vial screw caps are designed for both HPLC and GC instrument platforms across a wide variety of applications, including pharmaceutical, environmental, energy and fuels

However, the wrong choices of HPLC or GC vials, caps, septas and inserts might well lead to lower experiment productivity and reproducibility or even mechanical damage to the autosampler. Potential Risks by Using Incorrect Vial/Cap/Septum: Loss of samples due to evaporation; Extra peaks due to solvent↔septum interaction

HPLC & GC Certified Screw Vial & Cap Kits for 2 mL Samples. Precleaned, EPA certified assembled kits; includes 40 mL screw vials and 24 mm. open top screw caps. 0.3 and 1.5 mL screw top vial-cap kits for analysis of small sample volumes. For use with environmental analyses under EPA regulations.

GC Injector Liners Gas Management Generators Graphite Tubes Vials, Caps, & Septa OneSource Laboratory ...

Headspace vial caps are available in a variety of materials including aluminum, bimetal, and steel; headspace vial cap septa are available in PTFE/silicone, molded PTFE/butyl, and high-temperature varieties. Our headspace vial caps come in either 11 mm, 18 mm, 20 mm or 22 mm sizes. Most used headspace vial caps are crimp cap style.

Clear vials, blue screw caps, PTFE/silicone septa 100/pk 5182-0557 Clear vials with write-on spot, blue screw caps, PTFE/silicone septa 100/pk 5182-0865 Amber vials with write-on spot, green screw caps, PTFE/silicone septa 100/pk 5182-0558 Clear vials, blue screw caps, pre-slit blue PTFE silicone septa 100/pk 5183-2082 Clear vials with write-on

Jul 1, 2016 · Septa for Inlets. Arguably the most stressed-out parts of a GC system, inlet septa are tasked with maintaining a leak-tight seal between the atmosphere and carrier gas while not introducing significant contaminants into the carrier-gas stream-all of this while heated to upwards of 250 °C and being repeatedly punctured by sharp needles.

Type 1 borosilicate glass. Clear glass vials with 20mm crimp seal finish are designed to fit most headspace autosamplers. Flat bottom vials maximize heating efficiency when used with bottom. Round bottom vials are more easily handled by robotic arms that lift the vial from the tray. Round bottom vials distribute the internal pressure created at

Nov 10, 2022 · Press [Mode/Type] to select the vial size from a list, then press [Enter]. Install a new septum into the blue leak test vial. Place the blue leak test vial into priority position 1 (111 vial model) or into tray position 1 (12 vial model). Set the carrier pressure to a low flow If using HS Control or GC Control: a Cool the GC inlet and column oven.