The Insta-Test Nitrate / Nitrite test strips are a convenient way to quickly test water for Nitrates. Ranges and Sensitivity: Nitrate - 0, 5, 10, 25, 50 (NO3-N), Nitrite - 0, 0.5, 1, 5, 10 (NO2-N).
Applications: Drinking Water, Industrial Water Boiling and Cooling, Laundry and Sanitation, Water and Wastewater