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丙烯腈气体检知管128SB ACRYLONITRILE CH2=CHCN 0.1-3.5%
1.PERFORMANCE
1)Measuring range:10-500 ppm
Number of pump strokes (1100mL)
2)Sampling time:1.5 minutes/1 pump stroke
3)Detectable limit:1 ppm
4)Shelf life:2 years
5)Operating temperature:0~40℃
7)Reading:
8)Colour change:Yellow→Pale blue
2.RELATIVE STANDARD DEVIATION
RSD-low:5%RSD-mid:5%RSD-high:5%
3.CHEMICAL REACTION
Chromium oxide is reduced.
CH 2=CHCN+Cr6++H 2SO 4→Cr3+