| EPA Method | Test Name | Matrix | MRL | Instrument |
|---|
| EPA 300.0 | Nitrite Anion by Ion Chromatography | Liquid | 0.2 | IC |
| EPA 300.0 | Nitrite Anion by Ion Chromatography | Liquid | 0.5 | IC |
| EPA 353.2 | Nitrogen, Nitrite (Colorimetric, Automated Cadmium Reduction) | Drinking Water | 0.05 | FIA |
| EPA 353.2 | Nitrogen, Nitrite (Colorimetric, Automated Cadmium Reduction) | Liquid | 0.05 | FIA |
| EPA 353.2 | Nitrogen, Nitrite (Colorimetric, Automated Cadmium Reduction) | Solid | 0.05 | FIA |
| EPA 353.2 | Nitrogen, Nitrite (Colorimetric, Automated Cadmium Reduction) | Solid | 1 | Discrete-FIA |
| EPA 9056 | Nitrite Anion by Ion Chromatography | Liquid | 0.5 | IC |