|Range||MDL||Method||Kit Catalog No.||Refill Catalog No.|
|0-0.5 ppm||0.005 ppm||PDMAB||K-5005||R-5005|
|0-12.5 ppm||0.25 ppm||PDMAB||K-5005D||R-5005D|
|0-25 ppm||0.5 ppm||PDMAB||K-5005A||R-5005A|
|0-50 ppm||1 ppm||PDMAB||K-5005B||R-5005B|
|0-500 ppm||10 ppm||PDMAB||K-5005C||R-5005C|
|Range||Method||Kit Catalog No.|
|V-2000: 0-1.20 ppm / Spec: 0-0.700 ppm||PDMAB||K-5003|
Hydrazine is a powerful reducing agent that is used in various chemical processes and in boiler water as an oxygen scavenger. To control corrosion, residual hydrazine typically is maintained in the 0.05 to 0.1 mg/L range. Higher levels may be used to guard against corrosion when the boiler is out of service for an extended period
The PDMAB Method
References: ASTM D 1385-07, Hydrazine in Water. L. C. Thomas and G. J. Chamberlin, Colorimetric Chemical Analytical Methods, 8thed., pp. 194-195, Method I (1974).
CHEMetrics' hydrazine test kits employ the PDMAB, paradimethylaminobenzaldehyde chemistry. PDMAB in acid solution reacts with hydrazine to form a yellow product. Results are expressed as ppb (ug/L) or ppm (mg/L) N2H4.