The automatic headspace sampler is mainly used for ambient air detection, cooling tower emissions, tobacco smoke, soil water vapor sampling, petrochemical gas analysis, and the number of sampling points. After use, insert the oil and garbage on the lifting shaft with absorbent paper, apply a small amount of lubricating oil on the lifting shaft, and then use absorbent paper to absorb the excess lubricating oil. Test several samples and listen to the lifting shaft clearly and regularly.

Caution and maintenance The use of the components of the automatic headspace injector:

The injection needle should be checked and maintained frequently, and if there is any problem, it should be replaced in time; pay attention to accurately setting the suction height to avoid bending the needle.

The injection needle is easy to be blocked by the fragments of the bottle pad of the sample bottle, the sample cannot be obtained, and the collected map has no sample peak, so the bottle pad with reliable quality is selected; the sample is not filtered or the sample solvent is improperly selected, or the injection needle is not cleaned, which will cause blockage. Pay attention to regularly check the needle and needle holder to eliminate blockage.

Set the corresponding needle washing program on the screen, flush the injection needle before and after each injection, clean the inner and outer walls of the needle, and prevent cross-contamination of the sample.

The sample bottle should be fully cleaned before use to avoid contamination of the sample; the size of the sample bottle should match the position of the sample tray, and the sealing performance of the bottle cap diaphragm pad is better, which is convenient for needle puncture several times, and no residual sample accumulation diaphragm pad.

The sample must be a uniform liquid without solid particles to avoid clogging the injection needle; for particularly dirty samples, 0.45 μm filter membrane can be used if necessary, and the sample should be dissolved with appropriate solvent and dissolved with flow.

The above is the automatic headspace sampler introduced by Xiaobian today. Thank you for reading patiently!