Gastec 35 气体检测管型号35硫酸 H2SO4(0.5-5mg / m3)

Indicator: 0.5-5mg/m3
Measuring Range: 0.5-5mg/m3, Number of Pump Strokes 5
Sampling Time: 1 minute per pump stroke
Colour Change: Pale yellow → Reddish purple
Reaction Principle: H2SO4 + BaCl2 → 2HCl, HCl+Base → Chloride 
Coefficient of Variation: 10% (for 0.5 to 2 mg/m3), 5% (for 2 to 5 mg/m3)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range 0.5 to 5 mg/m3
Number of Pump Strokes 5
Correction Factor 1
Sampling Time 1 minute per pump stroke
Detecting Limit 0.2 mg/m3(n=5)
Colour Change Pale yellow → Reddish purple
Reaction Principle H2SO4 + BaCl2 → 2HCl
HCl+Base → Chloride
Coefficient of Variation 10% (for 0.5 to 2 mg/m3), 5% (for 2 to 5 mg/m3)
Shelf Life 2 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
Hydrogen chloride 0.05 ppm + Reddish purple
Chlorine 1.5 ppm + Reddish purple
sulphur dioxide   No No
Nitrogen dioxide 4 ppm + Reddish purple
Hydrogen fluoride 0.5 ppm + Reddish purple
Calibration gas generation Vaper pressure method
TLV-TWA TLV-STEL Explosive range
0.2mg/m3(2014) - -
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