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Gastec 3D Passive Dosl Tubes Ammonia NH3 (2.5 ~ 1000 ppm)

  • Manufacturer: Gastec
    Model: 3D
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  • 976,500 VND
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Manufacture: Gastec
Model: 3D
Origin: Japan

Indicator: 25~500 ppm
Measuring Range: 2.5 ~ 1000 ppm
Sampling Hours: 0.5 to10 hours
Colour Change: Purple → Yellow
Reaction Principle: 2NH3 + H2SO4 → (NH4)2SO4
Coefficient of Variation: 10% (25 ~ 500 ppm-hr)
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 2.5 to 1000 ppm
Sampling Hours 0.5 to10 hours
Detecting Limit 0.5 ppm (10 hours)
Colour Change Purple → Yellow
Reaction Principle 2NH3 + H2SO4 → (NH4)2SO4
Coefficient of Variation 10% (for 25 to 500 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
Amines, Hydrazine   + Yellow
Aromatic amines   No No
Other substance measurable with this detector tube
Substance Correction Factor Sampling Time Measuring Range
Dimethylamine 0.75 0.5 to 10 hours 1.9 to 750 ppm
N,N-Dimethylethylamine 1.6 0.5 to 10 hours 4 to 1600 ppm
Hydrazine 0.65 0.5 to 10 hours 1.6 to 650 ppm
Triethylamine 2.1 0.5 to 10 hours 5.3 to 2100 ppm
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
25 ppm 35 ppm 15 to 28%

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