Tips for using chromatography vials

The importance of using caps and inserts that are compatible with chromatography vials
In order to avoid leakage and sample loss caused by evaporation, the inner cannula must be placed exactly in the sample bottle-and the entire device must be able to be completely sealed when capped. To prevent damage to the needle and ensure correct sample extraction when using an inner cannula, you should also consider the sampling depth of the autosampler needle.
The threaded sample bottle is produced in accordance with the international general thread standard. According to common sense, it can be used with various brands of sample bottles. But even so, if the thread design can accurately match the bottle cap and achieve good sealing, it is better to use the same Brand threaded cap.
Compatibility between sample and chromatography vial
Polypropylene vials are a suitable choice for biological applications and applications involving samples with high metal content, such as ion chromatography, AA or ICP-MS.
A series of polypropylene materials were thoroughly tested and evaluated before selecting the grade of material used for the polypropylene vials. Our polypropylene sample bottles contain almost no leachable impurities, thus ensuring the integrity of the sample.

Consistency between chromatographic vials
If the tolerances are not strictly controlled, the marked size and wall weight of the autosampler vial may be different. This will affect the sample volume in the vial, which is especially important for small samples. Our strict tolerance control runs through the entire manufacturing process, from the initial design to the later photoelectric scanning inspection process, to ensure the accuracy of each sample bottle and cap specification.
About how to choose a sample bottle:
We must first understand that sample vials mainly include crimp cap vials, screw cap vials and bayonet cap vials.
If you want a universal type and an acid-resistant type, you can choose a glass sample bottle;
If it is used for very small injection volume, a micro-lined tube is required;
If it is used for samples that are easy to stick to the wall of glass bottles and trace analysis, silanization/deactivation is required;
If it is used for light-sensitive samples, a brown bottle is required;
If it is used for alcohol samples or water-soluble solvents, polypropylene is required.

http://www.chinabiolife.com/