Draeger 8103281 Mercaptan 0.1/a Detector Tubes (10 tests per box)

Application Range:

• Standard Measuring Range: 0.1 to 2.5 ppm / 3 to 15 ppm
• Number of Strokes n: 10 / 2
• Time for Measurement: approx. 3 min / approx. 40 s
• Standard Deviation: ± 10 to 15 %
• Color Change: Yellow → Pink

Ambient Operating Conditions:

• Temperature: 5 to 40 °C
• Absolute Humidity: 2 to 40 mg H2O / L

Reaction Principle:

• 2 R-SH + Hg Cl2 → Hg(CH3S)2 + 2 HCl
• HCl + pH-indicator → reddish reaction product

Cross Sensitivity:

• Propyl mercaptan and n-butyl-mercaptan are indicated, but with different sensitivities.
• 4 ppm ethylene, 30 ppm CO, 10 ppm tetrahydrothiophene and 100 ppm hydrogen sulfide do not affect the indication.
• Hydrogen sulfide changes the pre-layer to black.