18mm Screw Neck Cap

ND18 18mm Screw Neck Headspace Vials
10ml, 22.5ⅹ46mm, 20ml, 22.5ⅹ75mm, DM18
Material: USP1, borosilicate glass
Boxed tpo minimizes vial damage.
Manufactured under strict quality to ensure dimensional consistency between batches
Suitable for headspace analysis of volatile solids and gases.
Store volatile samples to prevent evaporation
High temperature and corrosion resistance
Mainly used for headspace analysis in gas chromatographic analysis.

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.

The head space of the threaded mouth is easy to use, without tools, the Cap can be screwed directly on the bottle mouth; the risk of wrong clamping jaws is avoided, and the repeatability of the analysis results is guaranteed; the professional precision makes the gasket and the bottle mouth more sealed; Septa’s The thickness is less than the thickness of the jaw cover, making the puncture easier and safer; the sample can be taken out in the field without taking it out in the laboratory.

Also because the 18mm screw headspace vial needs to be used on the autosampler, the 18mm screw magnetic closures have a center hole for easy sampling. Septa uses a composite method of PTFE and Silicone. The composite process is Aijiren¡¯s exclusive patent and does not use any adhesives. Compound, compared to septa using adhesive, the texture is softer and has less influence on the experiment. The 18mm screw magnetic closures produced by Aijiren are the most suitable partner for gas chromatography.

Aijiren, as a factory specializing in the production of chromatographic consumables, not only produces Headspace Vial, but also 18mm Magnetic Closures. This Closures uses magnetic metal to make Cap, which can be adsorbed on the autosampler when it is grabbed by the autosampler. The position of Septa and the composite material of Silicone and PTFE are used as the material of Septa, which not only ensures the sealing performance, but also ensures the smooth injection process.

Aijiren usually packs 100 caps in a packaging bag, starting with a pack. Aijiren will choose the delivery method according to the quantity of products ordered by the customer. If the quantity ordered is small, it can be sent by express, and if the quantity is large, it needs to be transported by sea. If the customer is in a hurry, it can also be shipped by air.