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| Brand | Keyuan Instruments |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | KY-100 (6-position) |
| Digestion Method | Rapid Reflux Digestion |
| Heating Module | Precision Ceramic Heating Block |
| Batch Capacity | 6 samples simultaneously |
| Temperature Range | 25–170 °C (adjustable, ±1 °C accuracy) |
| Digestion Vessel Capacity | 250 mL conical flasks with reflux condensers |
| Timer Accuracy | ±1 second over full 180-minute range |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Rated Power | 1500 W |
| Ambient Operating Temperature | 5–40 °C |
| COD Measurement Range | 16–700 mg/L (dilutable for higher concentrations) |
| Analytical Precision | RSD ≤5.0% for potassium hydrogen phthalate standard (500 mg/L) |
| Compliance | HJ 828–2017 (replacing GB 11914–1989), aligned with ISO 6060 principles |
| Brand | Kyoyuan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | KY-1005 |
| Digestion Method | Reflux Digestion |
| Heating Module | Integrated Ceramic Heating Block |
| Batch Capacity | 5 × 250 mL Erlenmeyer Flasks |
| Temperature Setpoint | 165 °C (per GB 11914–1989 and ISO 6060) |
| Temperature Accuracy | ±1 °C at 165 °C |
| Timer Range | 0–999 min |
| COD Measurement Range | 0–1000 mg/L (direct), 0–10000 mg/L (after dilution) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Rated Power | 1300 W |
| Ambient Operating Temperature | 5–40 °C |
| Cooling Method | Forced-air convection (no tap water required) |
| Condenser Type | Glass “spike” reflux condenser (replaces spherical condenser) |
| Compliance | Fully aligned with GB 11914–1989, ISO 6060:1989, and EPA Method 410.4 principles |
| Brand | Kyoyuan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | KY-100(8)js |
| Digestion Method | Reflux Digestion |
| Batch Capacity | 8 samples |
| Temperature Setting | 165 °C (per GB 11914–1989 and ISO 6060) |
| Temperature Accuracy | ±1 °C at 165 °C |
| Sample Vessel Compatibility | 250 mL conical flasks or cylindrical digestion vials |
| Timer Range | 0–999 minutes (adjustable in 1-minute increments) |
| Heating Power | 1300 W (AC 220 V ±10 %, 50 Hz) |
| Cooling Method | Forced-air convection (no tap water required) |
| Condenser Type | Glass spiky reflux condenser |
| Measuring Range | 0–1000 mg/L (direct) |
| Precision | RSD ≤5.0% for potassium hydrogen phthalate (500 mg/L) |
| Operating Ambient | 5–40 °C |
| Compliance | Fully aligned with GB 11914–1989, ISO 6060:1989, and EPA Method 410.4 |
| Brand | Keyuan Instruments |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | KY-100(8) |
| Digestion Method | Reflux Digestion |
| Heating Module | Microcrystalline Glass Plate with Inorganic High-Temperature Insulation |
| Batch Capacity | 8 samples |
| Temperature Range | Ambient to 180 °C |
| Temperature Accuracy | ±1 °C |
| Digestion Vessel | 250 mL conical flask (24/29 standard taper) |
| Timer Accuracy | ±15 s/h |
| Power Supply | AC 220 V, 50 Hz |
| Max. Heating Power | ≤1600 W |
| Ramp Time to 180 °C | <20 min |
| Digestion Time Setting Range | 10 min – 150 min |
| Sample Matrix | Aqueous liquid only |
| COD Measurement Range | 0–700 mg/L (direct) |
| Precision | RSD ≤5.0% for 500 mg/L potassium hydrogen phthalate standard |
| Compliance | HJ 828–2017 (replacing GB 11914–1989) |
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