| equipment name | Multi-parameter water quality analyzer | Instrument model | 5B-3B(V8) | |
| Measurement item | COD | Ammonia nitrogen | Total phosphorus | Turbidity |
| Measuring range | 2-10000mg/L (segmentation) |
0.02-100mg/L (segmentation) |
0.002-5mg/L (segmentation) |
0.5-400NTU |
| Measurement accuracy | COD<50mg/L,≤±10% COD>50mg/L,≤± 5% |
≤±10% | ≤±5% | ≤±5% |
| Minimum detection limit | 0.1mg/L | 0.01mg/L | 0.001mg/L | 0.1NTU |
| Measurement time | 20min | 10-15 min | 35-50 min | 1 min |
| Batch volume | 16 water samples | 20 water samples (expandable) | 16 water samples | Unlimited |
| Repeatability | ≤±5% | ≤±5% | ≤±5% | ≤±5% |
| Light source life | 100,000 hours | |||
| Optically stable | ≤±0.005A/20 minutes | |||
| Anti-chlorine interference | [Cl-]<1000mg/L [Cl-]<4000mg/L | — | — | — |
| Colorimetric method | Colorimetric tube, cuvette | Colorimetric tube, cuvette | Colorimetric tube, cuvette | cuvette |
| Storing data | 12,000 | |||
| Number of curves | 219 | |||
| Display method | Color LCD (resolution 320x240) | |||
| Communication Interface | USB / infrared (optional) | |||
| Power supply | 220V AC power supply | |||