Isopropyl alcohol

NO.113L
CH3CHiOHjCH3ii-C3H7OHj
Performance
Measuring Range
25 to 50 ppm 50 to 800 ppm
Number of Pump Strokes
2 1
Correction Factor
1/2 1
Sampling Time 3 minutes per pump stroke
Detecting Limit 5 ppm (n=2)
Colour Change Pink → Pale blue
Reaction Principle C2H5OH + Cr6++ H2SO4 →Cr3+
Coefficient of Variation 15% (for 50 to 200 ppm), 10% (for 200 to 800 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   + Produce similar stain by themselves.
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Divinyl methoxysilane 0.05 2 2.5 to 40 ppm
Ethylene glycol MEE 1.25 2 62.5 to 1000 ppm
Ethylene glycol MEEAc 0.12 3 6 to 96 ppm
1-Methoxy-2-propanol 1.0 4 50 to 800 ppm
Propyl alcohol 1.3 1 65 to 1040 ppm
Vinyl trimethoxysilane 0.05 2 2.5 to 40 ppm
Ethylene glycol MBE by scale 2 30 to 1000 ppm
Ethylene glycol MME by scale 2 15 to 900 ppm
Ethylene glycol MMEAc by scale 2,4 20 to1300 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
200 ppm 400 ppm 2 to 12.7%


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