硫化物水*知管 S2- NO.211H

Performance
 
Measuring Range
 1 to 100 ppm
 
Sampling Time
 2 minutes
 
Detecting Limit
 0.5 ppm
 
Colour Change
 White → Brown
 
Reaction Principle
 S2- + Pb(CH3COO)2→ PbS
 
Shelf Life
 3 Years
 
Corrections for temperature & humidity
 Unnecessary
 
Store the tubes at cool and dark place.
 
Possible coexisting substances and their interferences (NOTE)
 
Substance
 Concentration
 Interference
 Change colour by itself to
 
CO32-
 500 ppm
 +
 No
 
Cl-
 5000 ppm
 +
 
No 
 
CrO42-
 25 ppm
 -
 
Yellow
 
SO32-
 300 ppm
 -
 No
 
S2O32-
 50 ppm
 Unclear demarcation 
 No