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Gastec 32D 受身ドールズチューブ過酸化水素過酸化水素(0.5〜40 ppm)

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Indicator:  5 ~ 40 ppm
Measuring Range:  0.5 ~ 40 ppm
Sampling Hours: 1 to 10 hours
Colour Change: White → Yellow
Reaction Principle: H2O2 + Ti(SO4)2 → Yellow product 
Coefficient of Variation: 10% (for 5 to 40 ppm-hr)
Nr. of tests: 10

Catalog

Performance
Measuring Range 0.5 to 40 ppm
Sampling Hours 1 to10 hours
Detecting Limit 0.3 ppm (10 hours)
Colour Change White → Yellow
Reaction Principle H2O2 + Ti(SO4)2 → Yellow product
Coefficient of Variation 10% (for 5 to 40 ppm-hr)
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
Nitrogen dioxide   No No
Chlorine,Ozone   No No
Acetaldehyde ≧ 20 ppm Unclear demarcation No
Formaldehyde 10 ppm No
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
1 ppm - -
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