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18mm Magnetic Precision Screw Metal Cap&Septa

MOQ:  50 packs, 100pcs/pack;

Suit for: 18mm Screw Thread Headspace Vial
Cap Material: Metal
Centre Hole Size: 8mm Centre Hole
Cap Feature: Magnetic Precision Screw
Septa Material: PTFE/Silicone or PTFE/Butyl
Septa Diameter: 17.5mm
Septa Thickness: 1.3mm, 1.5mm, 1.6mm

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Description
Description To complement the newly Shimadzu developed instrument, Ajiren has also made improvements to the chromatography vial’s cap. In particular, Ajiren's magnetic chromatography vial’s cap can be perfect with Nexera instrument. Currently, Aijiren offers a magnetic chromatographic vial’s cap with 18mm screw magnetic caps and 20mm crimp vial magnetic caps. Because of the magnetic nature of this chromatography vial cap, the accuracy of the sampler is improved. As a supplier of chromatography consumable, Ajiren offers a wide range of chromatography vials to choose. For more information on chromatography consumable, please follow us. PTFE/Silicone Septa: High quality, pure silicone is laminated to PTFE to give a pure, highly inert septum with excellent resealing characteristics even after repeated punctures. PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical. Works well for applications where ease of needle penetration is important. Septa-silica gel has strong repetitive sealability, and it can maintain good close performance after multiple injections; PTFE is a material with better chemical conditions at present, and it can withstand strong acids and alkalis. The two materials After compounding, the bottle can be used for various laboratory purposes such as sealed sampling, chemical storage and so on. Gray PTFE/ Butyl Septa: The Gray Butyl septum with PTFE barrier is an economical solution for low temperature (100°C), low-pressure applications. This septum is restricted for use with many solvents, and is not compatible with alkanes, benzene, chlorinated solvents or cyclohexane. Gray butyl offers good sealing characteristics for fixed gases and low molecular weight compounds. Butyl rubber/PTFE septa are used with ketones and acids, and where silicone-containing septa do not perform well. Both types of silicone and butyl rubber septa have a PTFE barrier layer which faces the sample, which reduces the contact between the sample and the silicone and butyl rubber. The butyl septa on the PTFE surface can be used in the headspace sample bottle to evaluate the injection activity and the penetration efficiency of methyl bromide on the activated carbon. The septum can be used to seal the vial during liquid sample collection for unmodified benzene analysis using HPLC method.
Part No. Description
SA001 Blue PTFE/White Silicone Septa, Φ17.5*1.5mm
SA002-II Red PTFE/White Silicone Septa, Φ17.5*1.3mm
SA003-II White PTFE/Blue Transparent Silicone Septa, Φ17.5*1.3mm For SPME
SA004 Gray PTFE/Red Butyl Septa, Φ17.5*1.6mm
CA001 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole
SACA001 Blue PTFE/White Silicone Septa, 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole
SACA002-II Red PTFE/White Silicone Septa, 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole
SACA003-II White PTFE/Blue Transparent Silicone Septa, 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole
SACA004 Gray PTFE/Red Butyl Septa, 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole
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