Ammonia Electrode

This gas-sensing combination electrode will measure ammonia in water down to 5x10–7 M (0.01 ppm as ammonia), ammonium ion (after pH adjustment), NO2 and NO3 after reduction. ASTM and EPA approved method. Ammonia electrode method for measuring Kjeldahl nitrogen after distillation is ASTM approved. Electrode will measure ammonia in fertilizer, stack gases, effluents, beer, biological samples, water, and soil. Replacement membranes or membrane caps are listed below.