Nitrate is an essential nutrient for plants but must be monitored in order to maintain proper health and optimum yield.
Cadmium reduction method.
Range (0-50 mg/L).
HI-3874 Nitrate test kit
Nitrate ions are present in trace amounts in surface water and in higher levels in some groundwater. Nitrate is found only in small quantities in domestic wastewater but can reach higher concentration (up to 30 mg/L as nitrogen) in the outflow of nitrifying biological treatment plants.