Only 0.3 mL is needed for a reading. Whether you are determining nitrate concentrations in the field or in the lab, this compact and durable meter provides simple, accurate, and fast measurements. Selectable analysis for NO₃ or NO₃-N and selectable units of ppm, mg/L, or kg/10a. Automatic calibration function recognizes standards and is user-selectable for either one- or two-point calibrations.

General-purpose nitrate meter includes: 150 and 2000 ppm standards, soft case, and batteries.

Soil nitrate meter includes: 30 and 300 ppm standards, 1-mL droppers, cleaning bottle, extraction bottle, spoons, filter paper, tweezers, hard carrying case, and batteries.

Crop nitrate meter includes: 300 and 5000 ppm standards, 1-mL droppers, cleaning bottle, sample press, sample cups, hard carrying case, and batteries.