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关 键 词：氟化氢检测管
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发布时间：2010-12-20
Hydrogen fluoride No.17D HF Performance Measuring Range 1 to 100 ppm Sampling Hours 1 to 10 hours Detecting Limit 0.5 ppm (10 hours) Color Change Yellow → Purple Reaction Principle HF + Indicator 仺 Purple product Coefficient of Variation 15% (for 10 to 20 ppm-hr),10% (for 20 to 100 ppm-hr) Shelf Life 3 Year Corrections for temperature & humidity Temperature and Humidity correction is necessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE) Substance Concentration Interference Change color by itself Chlorine 1/5 time + Bleaches zero zone Hydrogen chloride Nitric acid 1/5 time + Purple Calibration gas generation Diffusion tube method TLV-TWA TLV-STEL Explosive range 0.5ppm C 2 ppm
