Measures the concentration of Ammonium Ions NH4+ in solution. *Requires connection hardware, sold separately. Experiment Duration: 1 second to 31 days. Operation Modes: Concentration Range | pH Range | Temperature Range | Minimum Sample Size: 0.002 to 40000 ppm, 2.5 to 11.0 pH, 0 to 40 °C, 3 mL in a 50 mL beaker.
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