| EPA Method | Test Name | Matrix | MRL | Instrument |
|---|
| EPA 300.0 | Nitrate + Nitrite Anions by Ion Chromatography | Liquid | 0.16 | IC |
| EPA 300.0 | Nitrate + Nitrite Anions by Ion Chromatography | Liquid | 0.2 | IC |
| EPA 353.2 | Nitrogen, Dissolved Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Liquid | 0.002 | Discrete-FIA |
| EPA 353.2 | Nitrogen, Dissolved Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Liquid | 0.05 | Discrete-FIA |
| EPA 353.2 | Nitrogen, Total Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Drinking Water | 0.05 | Discrete-FIA |
| EPA 353.2 | Nitrogen, Total Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Drinking Water | 0.05 | FIA |
| EPA 353.2 | Nitrogen, Total Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Liquid | 0.002 | Discrete-FIA |
| EPA 353.2 | Nitrogen, Total Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Liquid | 0.05 | Discrete-FIA |
| EPA 353.2 | Nitrogen, Total Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) | Liquid | 0.05 | FIA |
| EPA 353.2M | Nitrogen, Nitrate-Nitrite (as N) (Colorimetric,Automated Cd Reduction), Modified for Matrix | Solid | 0.5 | FIA |
| EPA 353.2M | SPLP Nitrogen, Nitrate-Nitrite (Colorimetric, Automated, Cadmium Reduction) Modified for Prep | Solid | 0.05 | Discrete-FIA |