PHS-3C/2C/3B/3CT酸度計適用于測量水溶液酸度（ PH值）和電極電位（mV值），儀器如配上適當的離子選擇電極，也可以測定溶液離子濃度。具有數顯溫度和斜率補償功能。
PHS-3C/2C/3B/3CT酸度計性能指標
| 型號 | PHS-3C | PHS-3B | PHS-3CT | PHS-2C |
| 測量范圍 | 0-14PH | 0-14PH | 0-14PH | 0-14PH |
| 精度 | ±0.01PH | ±0.01PH | ±0.01PH | ±0.02PH |
| 價格 | 2400.00 | 2500.00 | 2580.00 | 1287.00 |
| PHS-25數顯 | 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 |
