Nitrate (NO3-) is found in water sources where ammonia has been converted to nitrate. It is most commonly found in wastewater, where nitrification has been used to do this conversion. High levels of nitrate are harmful to human health, so nitrate levels must be carefully monitored in drinking water.
Nitrate levels can be measured through photometry or through ISE measurements. Hanna supply a wide range of products that are ideal for accurate determination of nitrate concentration.