量程:0.0 to 50.0 mg/L NH4, 精度:±0.5mg/L @ 读数±5%
量程:0.00 to 3.00 mg/L NH3-N, 精度:±0.04mg/L @ 读数 ±4%
量程:0.00 to 3.00 mg/L NH3-N,精度:±0.04mg/L @ 读数 ±4%