PHS-3C/2C/3B/3CT酸度计适用于测量水溶液酸度（ PH值）和电极电位（mV值），仪器如配上适当的离子选择电极，也可以测定溶液离子浓度。具有数显温度和斜率补偿功能。
PHS-3C/2C/3B/3CT酸度计性能指标
| 型号 | PHS-3C | PHS-3B | PHS-3CT | PHS-2C |
| 测量范围 | 0-14PH | 0-14PH | 0-14PH | 0-14PH |
| 精度 | ±0.01PH | ±0.01PH | ±0.01PH | ±0.02PH |
| 价格 | 2400.00 | 2500.00 | 2580.00 | 1287.00 |
| PHS-25数显 | PHS-25 | PHB-1 | PHB-4 | PHB-100 |
| 0-14PH | 0-14PH | 0-14PH | 0-14PH | 0-14PH |
| ±0.05PH | ±0.01PH | ±0.01PH | ±0.01PH | ±0.01PH |
| 1287.00 | 1000.00 | 980.00 | 280.00 | 1350.00 |
