Gastec 151D 丙酮被动发现管CH3COCH3(5~1500 ppm)

Indicator: 5 ~ 1500 ppm 
Measuring Range: 5 ~ 1500 ppm 
Sampling Hours: 1 to 10 hours
Colour Change: Yellow → Reddish Brown 
Reaction Principle: CH3COCH3 + (NH2OH)3H3PO4 → H3PO4, H3PO4 + Base → Phosphate
Coefficient of Variation: 10% (for 50 to 1500 ppm-hr)
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 5 to 1500 ppm
Sampling Hours 1 to 10 hours
Detecting Limit 5 ppm (10 hours)
Colour Change Yellow → Reddish Brown
Reaction Principle CH3COCH3 + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate
Coefficient of Variation 10% (for 50 to 1500 ppm-hr)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Aldehydes,Ketones   + Reddish brown
Acid gases   + Reddish brown
(Unclear demarcation)
Other substance measurable with this detector tube
Substance Correction Factor Measuring Range
Methyl ethyl ketone 1.3 6.5 to 1950 ppm
Methyl isobutyl ketone 2.3 11.5 to 3450 ppm
Acetaldehyde 0.8 4 to 1200 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
500 ppm (2014) 750 ppm (2014) 2.1 to 13%
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