GAS201H Sulphides Gastec Detector Tubes
1. The measured out mud and soil is put in the generation tube and 5mL of distilled water are added.
In case of muddy water, it suffices to add a small amount of distilled water (measured out in a graduated cylinder) to the gas generation tube.
Put the cap on the generation tube.
(By repeating this process several times, all sulphides become hydrogen sulphide several times repeatedly).
The scale in the detector tube is read, and the concentration of the sulphide in the sample is calculated.
|Measuring Range||0.02 to 0.2 mg|
|Sampling Time||45 seconds per 1 pomp stroke|
|Detecting Limit||0.002 mg|
|Colour Change||White Brown|
|Coefficient of Variation||5% (for 0.02 to 0.2 mg)|
|Shelf Life||3 Years|
temperature & humidity
|Store the tubes at cool and dark place.|
Possible coexisting substances and their interferences
|Substance||Concentration||Interference||Change colour by itself|
|Calibration gas generation||Static gas dilution method|
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