LCD display with backlight.
Simple operation, appropriate measurement range and high cost performance make it more suitable for use in various industries.
The unique positioning structure and high-precision optical path system can effectively ensure the correctness and repeatability of the measured values.
The circuit system with low drift, high precision and good stability, and the effective and long-life light source can effectively ensure the stable operation of the instrument for a long time.
Users can choose different turbidity units (NTU, EBC, ASBC) according to their needs.

| Product number | SGZ-20A | SGZ-50A | SGZ-200A | SGZ-200AS | SGZ-400A |
| Principle | 90˚ scattered light | ||||
| Measuring range (NTU) | 0~20 | 0~50 | 0~200 | 0~200 | 0~200,200~400 |
| Indication accuracy | 0.01 | 0.01 | 0.01 | 0.1 | 0.01 |
| Indication stability | ±1.5%(FS 30min) | ||||
| zero drift | ±1.5%(FS 30min) | ||||
| repeatability | ≤2% | ||||
| ( linear error ) | |||||
| Indication error | ±8% | ±6% | |||
| (basic error) | |||||