1-Butanol

NO.114
CH3CH2CH2CH2OH (CH3(CH2)3OH)
Performance
Measuring Range 10 to 150 ppm
Number of Pump Strokes 3
Correction Factor 1
Sampling Time 3 minutes per pump stroke
Detecting Limit 1 ppm (n=3)
Colour Change Yellow → Pale blue
Reaction Principle CH3(CH2)3OH + Cr6++ H3PO4 Cr3+
Coefficient of Variation 15% (for 2.5 to 30 ppm), 10% (for 30 to 150 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Alcohols   + Pale blue
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
20ppm - 1.4 to 11.2%


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