| Model | ORP-11 |
| Measurement principle | ORP electrode |
| Minimum sample volume | 0.3 ml (0.05 ml with Sampling Sheet B) |
| ORP range / resolution | -1000 to 1000 mV / 1 mV |
| Accuracy | ± 2 mV |
| Maximum calibration points | 1 |
| Temperature display / resolution | 0 to 50.0 ⁰C / 0.1 ⁰C |
| Functions |
|
| Display | Custom (monochrome) digital LCD with backlight |
| Operating temperature / humidity | 5 to 40.0 ⁰C / ≤ 85% in relative humidity (no condensation) |
| Battery life | Approx. 400 hrs. continuous use without backlight |
| Materials | ABS epoxy body / platinum disk sensor |
| Dimensions | 164 x 29 x 20 mm (excluding projections) |
| Mass | Approx. 55g (including sensor and batteries) |
| Accessories included | 225 mV ORP standard (14 ml), abrasive cotton swab, CR2032 batteries (2 pcs), dropper, instruction & quick manuals, storage case |



















































