The products meet the environmental standards hj536-2009, HJ / t-101-2003 and national standard gb7981-87. In the presence of alkaline medium (pH = 11.7) and sodium nitrosoferricyanide, ammonia and ammonium ions in water react with salicylate and hypochlorite to form blue compound. The absorbance is measured at 660 nm. It is converted into ammonia nitrogen concentration in water.
Th-zx200 ammonia nitrogen water quality automatic analyzer is developed by our company, which is used to measure ammonia nitrogen concentration in water. It is suitable for on-line and off-line detection of surface water, pollution source water quality, industrial and municipal wastewater and sewage.