| pH | Measuring range | 0~14.0 pH |
| Resolution | 0.1 pH | |
| Accuracy | ±0.1pH±1 digit | |
| Temperature compensation | No | |
| Other technical parameters | Automatic Calibration |
1 point calibration （7.00 pH） |
| Power |
2 AAA batteries, 1.5V × 2, more than 100 hours of continuous using |
|
| Size and weight | 39×25×176 mm/95g | |
| Waterproof | IP57 |
ชุดมาตรฐานประกอบด้วย
| 1. PHB-3 Pen pH meter | 1pc |
| 2. pHCalibration buffer solution（pH7.00/10ml） | 1bottles |
| 3. AAA batteries | 2pcs |
| 4. Manual | 1pc |
