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18mm Screw Thread Metal Cap for GC Vials
https://aijirentechinc.com/aijirenvials

18mm Screw Thread Metal Cap for GC Vials

Vials with septa-capped 18mm caps are used as sample vials, and these vials can also be used as storage bottles. Precision-machined threads always ensure sealing. It fits perfectly with the matching 18mm magnetic metal screw cap and PTFE/silicone septum. The caliber of this series of headspace bottles is 18mm, and the size of 20ml is 22.5*75.5mm.

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The 18mm septum uses only the highest quality materials to ensure normal function, and is especially suitable for gas chromatography applications to ensure that the septum will not fall into the sample vial during sample injection. Septa are made of polytetrafluoroethylene/silicone melt. They are made of TFE/silicone melt. They have excellent inertness and can be used for multiple injections. The thickness of the diaphragm is 1.5 mm. The screw headspace series bottle caps combine innovation with time-saving convenience, precise manufacturing tolerances and a controllable manufacturing environment. The bottle cap produced by this patented method truly combines the septum and the cap at the molecular level to avoid excessive evaporation and keep the sample bottle properly sealed.
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