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| Brand | Greencarey Instruments |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Type | Laboratory-Grade COD Analyzer |
| Model | GL-200A |
| Detection Principle | Rapid Digestion Method (HJ/T 399–2007) |
| Wavelength Accuracy | ≤±0.001 Abs/20 min (Optical Source Lifetime: 100,000 hours) |
| Measurement Range | 0–15,000 mg/L (segmented) |
| Accuracy | ≤±5% (COD >50 mg/L) |
| Repeatability | ≤±3% |
| LOD | 5 mg/L |
| Digestion Temp/Time | 165 °C / 20 min |
| Total Cycle Time | 25 min/batch |
| Sample Throughput | 1 batch per 25 min |
| Chloride Interference Tolerance | up to 2,000 mg/L |
| Cuvette Format | 16 mm round digestion tube (no post-digestion transfer required) |
| Display | 4.3″ color TFT LCD |
| Data Output | USB flash drive export & built-in thermal printer |
| Optical System | Solid-state cold light source |
| Housing Material | ABS (chemical-resistant, heat-stable, impact-durable) |
| Power Supply | DC 12 V, 5 A |
| Operating Environment | 5–40 °C, ≤85% RH (non-condensing) |
| Dimensions | 300 × 222 × 88 mm |
| Weight | ~2.8 kg |
| Compliance | HJ/T 399–2007 (COD), HJ 535–2009 (NH₃-N), GB/T 11893–1989 (TP), HJ 636–2012 (TN), and 18+ additional water quality parameters with standardized photometric methods |
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