C4H8S

Performance

Measuring Range	10 to 100mg/m³
Number of Pump Stroke	2
Correction Factor	1
Sampling Time	1.5 minutes per pumpstroke
Detecting Limit	2 mg/m³ (n=2)
Color Change	Pink → PaleYellow
Reaction Formula	C4H8S + MnO4 (Pink) → Pale Yellow Product
Coefficient ofVariation	10% (for 10 to 30mg/m³), 5% (for 30 to 100mg/m³)
ShelfLife	2 Years
Correctionsfor temperature & humidity	Temperature correction is necessary
Store the tubes at cool and darkplace.

Possible coexisting substances and theirinterferences

(NOTE)

Substance	Concentration	Interference	Change color by itself
Ethylmercaptan	2 ppm	No	Discolor whole layerto pale pink
Ethylene	2000 ppm	No	Discolor whole layerto pale pink
Propylene	1000 ppm	No	Discolor whole layerto pale pink
Methanol	1000 ppm	No	Discolor whole layerto pale pink
Hydrogensulfide	80 ppm	No	Discolor whole layerto pale pink
1-Butene	1000 ppm	No	Discolor whole layerto pale pink
tert-Butyl Mercaptan	10mg/m³	No	Discolor whole layerto pale pink

Othersubstance measurable with this detector tube

Calibration gasgeneration

Diffusion tubemethod

TLV-TWA	TLV-STEL	Explosive range
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