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 30mg/L as nitrogen) in the outflow of nitrifying biological treatment plants. The HI-3874 is a chemical test kit for testing Nitrate. It is supplied with reagents to do 100 tests, a glass cuvette and a colour comparison guide.

• Includes reagents
• Method: colorimetric
• Range: 0-50 mg/L (ppm)
• Smallest Increment: 10 mg/L
• Chemical method: cadmium reduction
• Number of tests: 100
• Weight: 156g