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| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | WA755 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Colorimetric Method (with Predefined Reagent-Based Reaction Chemistry) |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy (Transmittance) | <0.5% T |
| Photometric Repeatability | <0.2% T |
| Stray Light | <0.05% T |
| Optical Stability | ±0.002 A/h |
| Display | 65K-color TFT LCD |
| Interface | USB Data Export |
| Measured Parameters | COD, Ammonia Nitrogen (NH₃-N), Total Nitrogen (TN), Total Phosphorus (TP) |
| Measurement Ranges | COD: 0.02–100 mg/L |
| NH₃-N | 0.01–30 mg/L |
| TN | 2–15,000 mg/L |
| TP | 1–10 mg/L |
| Detection Limits | NH₃-N: 0.01 mg/L |
| COD | 0.02 mg/L |
| TN | 2 mg/L |
| TP | 1 mg/L |
| Measurement Time per Parameter | NH₃-N: 15 min |
| TP | 40 min |
| TN | 50 min |
| COD | 20 min |
| Batch Capacity | 16 samples (COD/TN/TP) |
| Digestion Temperature Control | COD: 165 °C ±0.5 °C |
| TN | 122 °C ±0.5 °C |
| TP | 120 °C ±0.5 °C |
| NH₃-N | adjustable (sealed or open-mode) |
| Digestion Duration | COD/TN/TP/NH₃-N: 10–40 min (parameter-specific) |
| Digestion Mode | Sealed (TN, TP), Sealed or Open (NH₃-N, COD) |
| Calibration Curve Storage | 200 preloaded & user-defined curves |
| Data Storage Capacity | 40,000 test records |
| Compliant Standards | GB/T 11893–1989 (TP), GB/T 11894–1989 (TN), HJ 535–2009 (NH₃-N), HJ 399–2007 (COD) |
| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Model | WA655 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | UV-Vis Absorption Spectrophotometry |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy | <0.5% T |
| Photometric Repeatability | <0.2% T |
| Stray Light | <0.05% T |
| Optical Stability | ±0.002 A/h |
| Detection Limits | TN: 0.1 mg/L, TP: 0.05 mg/L, NH₃-N: 0.01 mg/L, COD: 0.02 mg/L |
| Measurement Ranges | TN: 2–15,000 mg/L, TP: 1–10 mg/L, NH₃-N: 0.01–30 mg/L, COD: 0.02–100 mg/L |
| Measurement Error | TN < ±8%, TP < ±5%, NH₃-N < ±5%, COD < ±5% |
| Digestion Temperature Control | TN: 122 °C ±0.5 °C, TP: 120 °C ±0.5 °C, COD: 165 °C ±0.5 °C |
| Digestion Time | TN: 40 min, TP: 30 min, NH₃-N: 10 min, COD: 10 min |
| Digestion Mode | Sealed (TN, TP), Sealed or Open (NH₃-N, COD) |
| Sample Throughput | 16 samples per batch (TN/TP/COD), 20 samples per batch (NH₃-N), expandable |
| Display | 65K-color TFT LCD |
| Interface | USB |
| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Model | WA650 |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy (Transmittance) | <0.5% T |
| Photometric Repeatability (Transmittance) | <0.2% T |
| Stray Light | <0.05% T |
| Optical Stability | ±0.002 A/h |
| Measured Parameters | Total Nitrogen (TN), Total Phosphorus (TP), Ammonia-Nitrogen (NH₃-N), Chemical Oxygen Demand (COD) |
| Measurement Ranges | TN: 2–15,000 mg/L |
| TP | 1–10 mg/L |
| NH₃-N | 0.01–30 mg/L |
| COD | 0.02–100 mg/L |
| Measurement Time | TN: 50 min |
| TP | 40 min |
| NH₃-N | 15 min |
| COD | 20 min |
| Measurement Error | TN: <±8% |
| TP | <±5% |
| NH₃-N | <±5% |
| COD | <±5% |
| Batch Capacity | TN/TP/COD: up to 16 samples (expandable) |
| NH₃-N | up to 20 samples (expandable) |
| Digestion Temperature Control | TN: 122°C ±0.5°C |
| TP | 120°C ±0.5°C |
| COD | 165°C ±0.5°C |
| Digestion Time | TN: 40 min |
| TP | 30 min |
| NH₃-N | 10 min |
| COD | 10 min |
| Digestion Mode | Sealed for TN & TP |
| Preloaded Calibration Curves | 200 sets |
| Data Storage Capacity | 40,000 test records |
| Standard Accessories | Reagent kits, 16-position intelligent digester, optional cuvettes (1 cm / 2 cm / 3 cm) |
| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Model | WA653 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | UV-Vis Spectrophotometry (with Integrated Digestion) |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy (Transmittance) | < ±0.5% T |
| Photometric Repeatability | < ±0.2% T |
| Stray Light | < 0.05% T |
| Optical Stability | ±0.002 A/h |
| Detection Limit | 0.01 mg/L (for TN, TP, NH₃-N, COD) |
| Resolution | 0.001 mg/L |
| Measurement Range | Total Nitrogen (TN): 2–15,000 mg/L |
| Total Phosphorus (TP) | 1–10 mg/L |
| Ammonia Nitrogen (NH₃-N) | 0.01–30 mg/L |
| Chemical Oxygen Demand (COD) | 0.02–100 mg/L |
| Measurement Error | TN < ±8%, TP < ±5%, NH₃-N < ±5%, COD < ±5% |
| Digestion Temperature Control | TN: 122 °C ±0.5 °C |
| TP | 120 °C ±0.5 °C |
| COD | 165 °C ±0.5 °C |
| Digestion Time | TN: 40 min |
| TP | 30 min |
| NH₃-N | 10 min |
| COD | 10 min |
| Sample Throughput | Up to 16 samples (TN/TP/COD), up to 20 samples (NH₃-N), with optional expansion |
| Display | 65K-color TFT LCD |
| Data Storage | 40,000 measurement records + 200 preloaded calibration curves |
| Interface | USB |
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