| Measurement range: | 5 ~ 2000mg / L, exceeding the dilution test. | Indication error: | Max. ± 5 % |
| Repeatability: | Max. 3% | Anti-chlorine interference: | ?2000mg/L |
| Optical system: | 420nm (low range) and 610nm (medium and high range) | Temperature control system: | Can be set at room temperature ~200 °C, COD digestion temperature is 165 °C. |
| Temperature control accuracy: | ±1 °C | Temperature control time: | Adjustable from 1 to 999 minutes |
| Resolution time: | 15 min. | Optical stability: | Instrument absorbance drifts less than 0.002A in 20min |
| Batch volume: | 4 water samples (or 16 water samples) | Dimensions: | COD measuring instrument 80mm × 230mm × 55mm Digestion instrument 105mm × 160mm × 90mm |
| Weight: | Host 0.5kg digestion instrument: 1kg | Power supply: | Rechargeable lithium battery |