screw cap with septa

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.

The 24mm Screw Neck Closures produced by Aijiren are designed to be sealed with the sample storage vial. This sealing method ensures the storage capacity of the sample storage vial and is convenient for customers to store samples.

Our septum uses only the highest quality materials to ensure correct function, and can be pre-cut to reduce the penetration of the needle. It is designed for single injection and/or short sample cycles, especially for liquids. For phase chromatography applications, the lack of an elastomer layer can reduce the possibility of contamination.

The 24mm Screw Thread Cap produced by Aijiren is available in white, black and red. The 15mm center hole confirms that the injection needle can accurately pierce the septa and take samples.