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The headspace sampler is a matching instrument connected to the chromatograph. From the current market point of view, it can be divided into manual type, semi-automatic type and fully automatic type. Pay attention to the following two points when selecting the headspace sampler:2ml crimp MN Vials
First, the repeatability of the injection results (ie, 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. Therefore, the user should ask the manufacturer for the original spectrum and technical data for the factory inspection.
Second, the temperature gradient is also a key indicator, the temperature control range and control accuracy of the headspace constant temperature furnace, slightly higher can achieve 180 ° C and higher can achieve 200 ° C. Beyond 200 ° C is a bit far-fetched attributable to headspace injection.2ml crimp MN Vials The temperature range is usually from 10 ° C to 150 ° C above room temperature. This is my experience based on our own use, I hope I can help you.
This is the end of the introduction of Want to buy a headspace sampler, do not know how to choose, can some users give pointers? I hope it can help you.