Reference
Method
Test
Reagent #
Reagent Name
EPA
Colorimetric, Automated, Hydrazine Reduction
Nitrogen, Nitrate-Nitrite
6.8
Stock Nitrate Solution (100 mg/L NO3-N)
EPA
Colorimetric, Brucine
Nitrogen, Nitrate
6.5
Potassium Nitrate Stock Solution, 1.0 mL = 0.1 mg NO3-N
APHA
Automated Cadmium Reduction Method
Nitrogen (Nitrate)
3i
Stock Nitrate Solution
APHA
Automated Hydrazine Reduction Method
Nitrogen (Nitrate)
3h
Stock Nitrate Solution
APHA
Cadmium Reduction Method
Nitrogen (Nitrate)
3h
Stock Nitrate Solution
APHA
Nitrate Electrode Method
Nitrogen (Nitrate)
3b
Stock Nitrate Solution
APHA
Ultraviolet Spectrophotometric Screening Method
Nitrogen (Nitrate)
3b
Stock Nitrate Solution
APHA
Brucine Method
Nitrogen (Nitrate)
3a
Stock Nitrate Solution