Product Code: K-6904 Nitrate, CHEMets Water Test Kit, 30 Tests Designed for low-to-medium-range colorimetric analysis, each kit includes 30 prescored ampoules filled with reagents sealed under vacuum, color comparators, a snap cup, and instructions to perform 30 tests. Results are expressed as ppm NO3-N. Range: 0 to 30 ppm. Increments: 0, 4, 6, 8, 10, 12, 15, 20, 30 ppm. Analysis time: 11 min. Measures low concentrations of nitrate nitrogen from 0 to 4.5 ppm as N. Uses vacuum-sealed, self-filling CHEMets® ampoules for simple and reliable testing. Minimal reagent handling reduces operator exposure and contamination. Suitable for field or laboratory use. Color comparator provides rapid visual interpretation. Complies with recognized Cadmium Reduction methodology used in standard water analysis. To provide a kit with fresh reagents, this kit may need to be ordered in, so please inquire for stock availability.