Nitrate
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Methods
Visual Kits
Nitrate is the most completely oxidized form of
Range: 0-3.0 ppm as N
nitrogen. It is formed during the final stages of
MDL: 0.25 ppm / Method: Cadmium Reduction
biological decomposition, either in wastewater treat- Cat#
ment facilities or in natural water supplies. Low-level
CHEMets Kit K-6904
nitrate concentrations may be present in natural CHEMets Refill, 30 ampoules and 30 cadmium foil packs R-6902
waters. However, a Maximum Contaminant Level of Comparator, Shelf-life 2 years:
10 ppm nitrate-nitrogen has been established for
0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2.0, 3.0 ppm C-6904
drinking water by the USEPA.
Kit comes in a plastic case and contains everything needed to perform
30 tests: Refill, Comparator, 25 mL sample cup, reaction tube, instructions, and
MSDS.
The Cadmium Reduction Method
References: ASTM D 3867-04, Nitrate-Nitrite in Water,
Range: 0-90 ppm as N
MDL: 7.5 ppm / Method: Cadmium Reduction
Test Method B. APHA Standard Methods, 20
th
ed., pp.
Cat#
4-117, Method 4500-NO
-
3
E (1998). USEPA Methods for
VACUettes Kit K-6904D
Chemical Analysis of Water and Wastes, Method 353.3
VACUettes Refill, 30 ampoules and 30 cadmium foil packs R-6902D
(1983).
Comparator, Shelf-life 2 years:
Nitrate is reduced to nitrite using cadmium as the
0, 7.5, 15, 22.5, 30, 37.5, 45, 60, 90 ppm C-6904D
reducing agent. The resulting nitrite concentration
Kit comes in a plastic case and contains everything needed to perform
30 tests (except distilled water): Refill, Comparator, dilutor snapper cup, 5 mL
is then determined colorimetrically. This method is
sample cup with top, instructions, and MSDS.
applicable to drinking and surface waters, as well as
domestic and industrial wastes. Nitrite will interfere
Range: 0-180 ppm as N
with this test. Results are expressed as ppm (mg/L) MDL: 15 ppm / Method: Cadmium Reduction
NO
3
-N or NO
3
.
Cat#
VACUettes Kit K-6904A
VACUettes Refill, 30 ampoules and 30 cadmium foil packs R-6902A
Comparator, Shelf-life 2 years:
0, 15, 30, 45, 60, 75, 90, 120, 180 ppm C-6904A
Kit comes in a plastic case and contains everything needed to perform
30 tests (except distilled water): Refill, Comparator, dilutor snapper cup, 5 mL
sample cup with top, instructions, and MSDS.
Range: 0-360 ppm as N
MDL: 30 ppm / Method: Cadmium Reduction
Cat#
VACUettes Kit K-6904B
VACUettes Refill, 30 ampoules and 30 cadmium foil packs R-6902B
Comparator, Shelf-life 2 years:
0, 30, 60, 90, 120, 150, 180, 240, 360 ppm C-6904B
Kit comes in a plastic case and contains everything needed to perform
30 tests (except distilled water): Refill, Comparator, dilutor snapper cup, 5 ml
sample cup with top, instructions, and MSDS.
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