3119 Octet Comparator Method Color standards for 0.2, 0.4, 0.6 and 1.0 ppm NO₃—N Color standards for 0.2, 0.4, 0.6 and 1.0 ppm PO₄ Sufficient for 40-50 tests 

This kit tests for nitrate nitrogen using the LRC Comparator. Range/sensitivity is 0, 0.2, 0.4, 0.6, 0.8, 1.0 ppm NO₃--N. Applications: Food and Beverage, Environmental Education, Industrial Water Boiling and Cooling, Laundry and Sanitation, Water and Wastewater