CHEMets Nitrate Visual Method
Nitrate is the most completely oxidized form of nitrogen. It is formed during the final stages of biological decomposition, either in wastewater treatment facilities or in natural water supplies. Low-level nitrate concentrations may be present in natural waters. However, a Maximum Contaminant Level of 10 ppm nitrate-nitrogen has been established for drinking water by the USEPA.
CHEMets Nitrate Visual Method
The Cadmium Reduction Method
Nitrate is reduced to nitrite using cadmium as the reducing agent. The resulting nitrite concentration is then determined colorimetrically. This method is applicable to drinking and surface waters, as well as domestic and industrial wastes. Nitrite will interfere with this test. Results are expressed as ppm (mg/L) NO3-N or NO3.
The Zinc Reduction Method NEW!
Nitrate is reduced to nitrite using zinc as the reducing agent. The resulting nitrate concentration is then determined colorimetrically. This method is applicable to industrial wastewaters, drinking, and surface waters. These test kits can also be used for the analysis of seawater. This method will measure nitrate in the presence of low levels of nitrite (by difference). Results are expressed as ppm (mg/L) NO3-N.
The test kits that employ this method include sample tubes that are pre-dosed with zinc reagent, so the awkward use of foil packs is eliminated.
Analyte: NITRATE (nitrogen)
Method: CADMIUM REDUCTION/AZO DYE FORMATION METHOD
Type: CHEMet
K-6904 Nitrate 0-3 ppm
Analyte: NITRATE (nitrogen)
Method: CADMIUM REDUCTION/AZO DYE FORMATION METHOD
Type: VACUettes
K-6904D Nitrate 0-90 ppm
K-6904A Nitrate 0-180 ppm
K-6904B Nitrate 0-360 ppm
Test kits contain 30 ampoules, snap cup, accessory solutions (when necessary), MSDS, and instructions. Refill packs of 30 ampoules, and accessory solutions are available.
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