DDS-307 Digital Electrical Tester Conductivity Meter
| Model | DDS-307A | DDS-307 | DDS-11A |
| Rank | 1.0 | 1.0 | 1.5 |
| Conductivity | 0.000uS/cm - 199.9mS/cm | 0.000uS/cm - 199.9mS/cm | |
| TDS | (0.00mg/L - 1999)mg/L | ||
| Temperature | (0.0 - 60.0) degrees | ||
| Conductivity Error | ±1.0%(FS) | ±1.5%(FS) | |
| TDS Error | ±1.0%(FS) | ||
| Temperature Error | ±0.3 degree | ||