6728981 หลอด Tube วัดสารเคมีประเภท Mercaptan 0.5/a ยี่ห้อ Draeger
Model : 75-1802
Model (old) : 62-1800-M02
Application Range
Standard Measuring Range: 0.5 to 5 ppm
Number of Strokes n: 20
Time for Measurement: approx. 5 min
Standard Deviation: ± 10 to 15 %
Color Change: white -> yellow
Ambient Operating Conditions
Temperature: 10 to 40°C
Absolute Humidity: 3 to 15 mg H2O / L
Reaction Principle
2 R-SH + Pd2+ -> Pd(RS)2 + 2 H+
Cross Sensitivity
Higher molecular weight alkyl mercaptans (e.g. propyl- and butylmercaptans) are indicated with approximately the same sensitivity. 1,000 ppm ethylene, 2,000 ppm carbon monoxide and 200 ppm hydrogen sulfide do not affect the indication. Hydrogen sulfide discolors the pre-layer black.