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The headspace sampler offers more advantages than manual technology crimp headspace vials. Four methods can be established by software users. The user can edit one of the parameters in any method, and the headspace sampler automatically sets it according to these parameters. After that, the gas chromatograph is optimized for the analysis conditions according to the characteristics of the analyte. Another advantage is the automatic method of establishing, including automatic analysis of 50 samples, constant heating of each sample, and removal of the gas through a heated loop to ensure repeatability of the results. Pay attention to the following two points when selecting the headspace sampler:
First, the repeatability of the injection results, that is, the concentration of the RSD calibration sample is less than three thousandths. This indicator is a key indicator for the evaluation of the headspace sampler. The basic RSD of the qualified headspace sampler Zui should be less than 3% for this indicator, so the user should ask the manufacturer for the original spectrum and technical data.
Second, the temperature gradient is also a key indicator. The temperature control range and control accuracy of the headspace thermostat furnace (including the temperature stability and the deviation of the temperature gradient set value from the actual value) can be 180°C higher. Can do 200 ° C. Beyond 200 ° C crimp headspace vials is a bit far-fetched attributable to headspace injection. The temperature range is usually from 10 ° C to 150 ° C above room temperature.
This is the end of the introduction of Two different selection criteria for headspace sampler. I hope it can help you.
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