R-SH

Performance

MeasuringRange

0.1 to 0.2 ppm

0.2 to 0.5 ppm

0.5 to 4 ppm

4 to 8 ppm

Number of PumpStrokes

1/2

CorrectionFactor

1/5

0.4

SamplingTime

1.5 minutes per pumpstroke

DetectingLimit

0.05 ppm (n=4)

ColorChange

Yellow → Red

ReactionPrinciple

RSH + HgCl2 → RSHgCl + HCl
HCl + Base Chloride

Coefficient ofVariation10% (for0.5 to 1 ppm)， 5% (for 1 to 4 ppm)ShelfLife2YearsCorrectionsfor
temperature & humidityUnnecessaryStore the tubes at cool and darkplace.
Possible coexisting substances and theirinterferences(NOTE)

Substance

Concentration

Interference

Change color by itself

Acid gases

Plus error

Produces redstain

Hydrogensulfide

200ppm

No effect

Nodiscoloration

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R-SH