The BOQU PXG-2085Pro Online ammonia Meter offers a new way of ammonium monitoring in different water application. The online ammonia analyzer adopts advanced ion-selective electrode (ISE) technology for online continuous monitoring of ammonia concentration in water effluent. The ammonia electrode of the PXG-2085Pro online ammonia meter made with a molded ammonium (NH3)PVC membrane.The working life of the ammonia electrode (ISE) is over one year, because the ion sensor membrane is special designed by BOQU Instrument and it can be replaced in period according to water quality at site.so it can save much maintenance cost.