The Importance Of Sample Vial
If the tolerance is not strictly controlled, the marked size and wall weight of the autosampler vial may be different, which will affect the sample vial in the vial. Long it is very important for small samples.
Our strict tolerance control runs through during the entire manufacturing process, from the initial design to the final photoelectric scanning inspection process, the accuracy of the specifications of each sample bottle and bottle cap is ensured.
The integrity, cleanliness and uniformity of the sample vial are essential for today’s demanding applications. All sample vials are manufactured in a clean environment, and the unique packaging ensures cleanness and safety during transportation.
The inconsistent thickness of the bottom of the sample vial will lead to inconsistent sample extraction and damage the injection needle. Stopping the autosampler sequence will result in wrong grabbing or dropping of sample vials and loss of precious samples.
Failure to detect a leak in the seal can result in sample loss, volatilization, or even contamination of the sample. Septa that is displaced or incorrectly positioned can cause sample loss and sample contamination.
In the face of sample bottle selection, the following three elements have to be carefully considered!
PTFE/silica gel: Has excellent resealing characteristics. Before piercing, it has the chemical resistance of PTFE, and after piercing, the septum will have the chemical compatibility of silica gel.
PTFE/silicone (pre-notch): Provides good ventilation to prevent the formation of a vacuum in the sample vial, thereby achieving excellent sampling reproducibility. Eliminate the clogging of the bottom needle after sampling. Good resealing ability. Recommended for multiple injections.
Screw cap: universal bottle cap with good sealing effect. Withstand the septum mechanically, no other tools are needed.
Jaw cover: Aluminum jaws, good sealing effect, prevent sample evaporation. High temperature experiment environment, more resistant to high temperature. It needs to be used with the capping device. The sealing effect of the bayonet cap is not as good as the screw cap and the crimp cap.
The push-type bayonet cap is very suitable for storing powder samples, not suitable for transporting liquids. If the fit of the bottle cap is very tight, it is difficult to close the bottle cap and may break; if it is too loose, the sealing effect will be poor.
Glass-general-purpose and acid-resistant type; brown bottles-for light-sensitive samples; silanization/deactivation-for samples that easily adhere to the wall of glass bottles and trace analysis; polypropylene-for alcohol Class samples or water-soluble solvents; micro-lined tube-for very small injection volume; high yield-for limited sample volume.