The sealing property of the headspace vial is better than that of the threaded vial, and the rubber or silica gel has good re-sealing after the puncture, so it is ideal to preserve the reagents. If some of the organic solvents in use will corrode the silicone or rubber bottle pad, the bottle pad with PTFE coating is required, if in use, the reagent is not used up once, but stay in the headspace vial part of the next reuse, then the sample will be volatilized, because the bottle pad with PTFE coating will lose the sealing after a puncture.

1. Characteristic of Headspace Vial
Aijiren uses PTFE, silicone rubber or ultrapure silica gel as raw material, the product is non-toxic. Unique white silicone spacer, easier to puncture, protect automatic sampler needle, higher purity, and greatly reduce miscellaneous peaks. The adhesive-free process ensures that the two kinds of materials have good chemical inertness, acid resistance, alkali resistance, high-temperature resistance, and anti-adhesion, and the excellent resilience of silicone or silicon layer, which not only ensures the sealing property but also provides softer protection for the needle of the automatic sampler.
The Aijiren headspace vial has a beveled neck for safe sealing, uniform glass thickness for uniform heating distribution and stability, and a sturdy design that is easy to use. Available in clear and amber USP1 borosilicate glass with screws and crimp top. The round bottom bottle distributes the internal pressure generated under the high temperature of the glass surface, and it is easier to handle the vial being lifted from the tray by the robot arm. The screw-head empty bottle has 18mm rice agate ÇAp, which is suitable for autosampler using magnetic transportation while crimping the top bottle to be used with an aluminum cap.

2. Specification of Headspace Vial
Headspace vials and caps are used in headspace gas chromatography analysis because of their ability to withstand the pressure from the gas. Aijiren headspace vials come in three basic sizes (6ml headspace vials, 10mL headspace vials and 20mL headspace vials). Both flat bottom and round bottom styles are available for use in a wide variety of headspace instrument platforms.

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