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| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR/2800 + DRB200 |
| Detection Principle | Colorimetric Measurement after Micro- reflux Digestion (Cr⁶⁺ Reduction) |
| COD Range | 0–15,000 mg/L O₂ (via pre-filled vials) |
| Digestion Temperature | 150 °C ±2 °C |
| Digestion Time | 120 min |
| Vial Format | Sealed 3-mL预制试剂管 (0.2–2 mL sample volume) |
| Compliance | ASTM D1253, ISO 6060, EPA 410.4, USP <643>, GLP-ready data logging |
| Brand | Hach |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported |
| Model Range | COD21258-15, COD21258-25, COD21259-15, COD21259-25 |
| Measurement Ranges | 0–150 mg/L and 0–1500 mg/L |
| Package Sizes | 150-test and 25-test kits |
| Instrument Compatibility | Hach DR5000, DR2800, DR850, DR890 spectrophotometers and colorimeters |
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