Methyl Bromide 0,1/a (10) Part# 3706301

 Application Range
 Standard Measuring Range:  
Number of Strokes n:   
Time for Measurement:  
Standard Deviation:  
Color Change:  
0.1 to 5 ppm 
10 
/ 5 to 50 ppm
 / 2
 approx. 8 min. / approx. 4 min.
 ± 15 to 20 %
 bright 
 green

Ambient Operating Conditions
 Temperature:  
Absolute Humidity:  
2 to 40 °C
 < 40 H2O/L
 Reaction Principle
 CH3 Br + H2S2O7 + chromate 
Br2 + o-tolidine 
 Br2 
 green reaction product

 Cross Sensitivity
 Carbon tetrachloride: < 2 ppm no reading. In the presence of  
perchloroethylene or trichloroethylene, a methyl bromide measure
ment is not possible! Sulfuryl fluoride, phosphine, ethylene oxide, 
ammonia, hydrogen cyanide, chloropicrin and formaldehyde are not 
indicated below their threshold values. 2 ppm ethylene dibromide 
is indicated with approximately the same sensitivity. 0.5 ppm vinyl 
chloride is indicated with a reading of less than 0.1 ppm. 2 ppm 1.1 
dichloroethylene is not indicated and 20 ppm 1.2 dichloroethylene 
is indicated with a low reading of 3 ppm.