18mm Screw Closures
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.