Effect of Hydrogen on the Performance of Gas Chromatograph NPD
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Hydrogen in the four gases has the greatest impact on the overall performance of the gas chromatograph NPD, that is, the surface temperature, the size of the base flow, the sensitivity, 20ml screw hplc vials and the selectivity of the bead have different degrees of influence, and the flow rate of hydrogen The effect varies by less than mL/s.
In order to achieve the adjustment of the small flow rate of hydrogen, in the gas chromatograph NPD operation, the gas path control for providing hydrogen regulation must be specifically designed, and it cannot be shared with the coarse adjustment FID. Compared with different manufacturers, the maximum hydrogen flow rate of the gas chromatograph NPD is also less than 10mL/min, generally between 1.5~1.8mL/min. 20ml screw hplc vials
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