Hanna Instruments HI96728C Nitrate Photometer Kit

Nitrates are present in nature as a result of decomposition of organic microorganisms or due to their use as fertilizers. Nitrates reduce to nitrites, which in turn easily combine to form substances dangerous to man. A maximum level of 45 milligrams per liter is established as a worldwide guideline for nitrate concentration in water. In Europe, the maximum consented level of nitrates in potable water is 50.0 milligrams per liter , while in the USA the EPA has established a guideline for the maximum level of nitrate nitrogen of 10 milligrams per liter (NO-3-N), which corresponds to 45.0 milligrams per liter of nitrates. The kit provides you with all you need for field measurement: photometer, reagents and apparatus perfectly fitted in a rugged carrying case. With a normal 9V battery you will be able to get more than 300 measurements. The auto shut-off feature (after 10 minutes of non-use) guarantees a long battery life. Range: 0.0 to 100 milligrams per liter . Resolution: 1 milligrams per liter . Accuracy:+/-5 milligrams per liter +/-5 percent of reading at 25 degree C. Light source: Tungsten Lamp. Light detection: silicon photocell. Battery type/life: 1 x 9V/approx. 40 hours of continuous use; auto-off after 10 minutes of non use. Environment: 0 to 50 degree C (32 to 122 degree F); RH max 95 percent non-condensing. Measures: 7-19/32" length by 4" width by 2-19/32" height. Method: adaptation of cadmium reaction method. The reaction between nitrate-nitrogen and the reagent causes an amber tint in the sample. Typical EMC Dev.:+/-1 milligrams per liter .