HANNA, HI 96733 Ammonia Photometer With 470 Nm LED

Ammonia is often an excellent indication of the presence of animal or plant microbiological decay. It is tested in fish farms ( fresh and salt water tanks) due to the damaging effects of its toxic nature. Its presence in rivers and reservoirs normally points to agricultural and/ or civil pollutants. Ammonia is tested in lakes, rivers, portable water, boiler feed water, sewage, industrial and waste water. Ion Selective electrodes currently used for these measurements require up to 5 minutes for a stable response time, normally last only 3 to 6 months. On the other hand, 3 or 4 Chemical Test Kits using color cubes are needed to cover the full range. The best increment with chemical test kits is never better than 0.1 mg/ L and in most cases, only 0.5 mg/ L. Range 0.0 to 50.0 mg/ L ( as NH3-N) Resolution 0.1 mg/ L Accuracy ± 0.5 mg/ L ± 5% of reading @ 25° 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° C ( 32 to 122° F) ; RH max 95% non-condensing Dimensions 192 x 102 x 67 mm ( 7.6 x 4 x 2.6" ) Weight 290 g ( 10 oz.) Method Adaptation of the ASTM Manual of Water and Environmental Technology, D1426-92, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample Typical EMC Deviation ± 0.1 mg/ L