It is designed like a pen and convenient to use in any situation.
■   Functions: automatic calibration, automatic temperature compensation, automatic power off, low voltage alarm, pH electrode invalidation display, etc.
■   Easy to use : single button operation.
■   Reliable design: meets IP57, replaceable batteries, calibration solution, electrode soaking solution and standby batteries in a portable case.
 
 
 Main Technical Parameters
 
| Ordering   Information → Parameter   ↓ | BGD 287 | BGD 288 | 
| Measuring range | 0~14.0 pH | -1.00~15.00 pH | 
| Resolution | 0.1 pH | 0.01 pH | 
| Accuracy | ± 0.1 pH | ± 0.01 pH | 
| Stability | ±0.1 pH/3h | ±0.01 pH/3h | 
| Temp.   compensation range | 0~60℃ (automatic) | 0 ~ 60℃ (automatic) | 
| Show Temperature | No | Yes | 
| Auto.   Calibration | 1 Point   (pH7.00) | 1 ~ 3   point (pH4.00/7.00/10.01) | 
| Power | CR2032   lithium batteriesx2, continuous use for over 100 hours | 
| Dimension | 148x29x14mm | 
| Weight | 43g |