预组装螺纹口样品瓶，带酚醛树脂顶部开口瓶盖

Vials are suitable basically to inject samples from an autosampler. Autosampler needle pierces through the cap during injection and withdraws the required aliquots of the sample from the vials. Screw top glass vials are used on many autosamplers. Amber glass prevents the samples from exposure to UV light. The threads on the vials are 18-400. Includes a phenolic open top cap and a tan PTFE/silicone septum suitable for use with most organic solvents (until pierced) and not recommended for use with chlorosilanes.