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| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | CR4200 |
| Pricing | Available Upon Request |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | CTL-12 |
| Pricing | Available Upon Request |
| Detection Limit | 5 mg/L COD |
| Measurement Range | 20–1200 mg/L COD |
| Repeatability | ≤0.87% |
| Optical Stability | 0.001 A/5 min |
| Sample Throughput | Up to 12 samples per batch |
| Digestion Time | 10 min at 165 °C |
| Measurement Wavelength | 610 nm |
| Chloride Interference Tolerance | ≤900 mg/L Cl⁻ (open-tube mode) |
| Data Storage | 9 pre-programmed calibration curves |
| Display | 5-digit LED (time, date, absorbance, concentration, slope) |
| Power Supply | 220 V, 50 Hz, 200–700 W |
| Brand | ZYKX |
|---|---|
| Origin | Beijing, China |
| Model | InLab-2022 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelength Range | 590–610 nm |
| COD Range | 5–15,000 mg/L (high-range), 5–150 mg/L (low-range), 0–50 mg/L (permanganate method) |
| Repeatability | ≤ ±5% |
| Measurement Time | 20 min (typical COD cycle) |
| Batch Capacity | 15 samples |
| Temperature Control Range | 45–200 °C |
| Temperature Uniformity | ≤ 1 °C |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 370 × 250 × 140 mm |
| Weight | Approx. 4.2 kg |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-made) |
| Model | ET3150B/ET1150M |
| Instrument Type | Benchtop Laboratory Analyzer |
| Power Supply | 220 V AC, 50 Hz |
| Operating Temperature | 5–50 °C |
| Relative Humidity | 20–85 % RH |
| Wavelength Accuracy | ±2 nm |
| Wavelength Selection | 420 nm and 610 nm (LED-based optical system) |
| Photometric Accuracy | ±8 % of full scale |
| Repeatability | RSD ≤ 3 % |
| Photometric Stability | ΔA < 0.005 A within 20 min |
| Measurement Modes | Absorbance, Transmittance, Concentration |
| Built-in Test Programs | COD, TN, TP, NH₃-N, F⁻ |
| Preloaded Calibration Curves | 6 |
| User-defined Curve Storage | Supported |
| ET3150B Digestion Block Capacity | 24 × Φ16 × 100 mm tubes |
| Digestion Temperature Accuracy | ±1 °C |
| COD Digestion Temp | 165 °C ±1 °C |
| TN/TP Digestion Temp | 105 °C |
| Timer Range | 1–1860 min (31 h) |
| Display | LCD with full Chinese interface |
| Heating Rate | 20 → 165 °C in ≤10 min |
| Safety Features | Auto-shutdown, over-temperature alarm, timer alert |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | CM-02 |
| Price | Upon Request |
| Detection Range | 10–200 mg/L (low range), 50–2500 mg/L (high range) |
| LOD | 3 mg/L |
| Wavelength | 610 nm |
| Accuracy | ±5% (low range), ±4% (high range) |
| Chloride Interference Tolerance | 1000 mg/L (low), 2500 mg/L (high) |
| Measurement Time | 10–15 min |
| Heating Capacity | 25 tubes, 0–180 °C, timer 10–199 min |
| Optical Stability | ±0.003/5 min (blank) |
| Display Resolution | 0.001 |
| Operating Temperature | 5–35 °C |
| Storage Temperature | −10–45 °C |
| Power Consumption | ≤30 W (heater), ≤10 W (analyzer) |
| Weight | 3.0 kg (analyzer), 3.5 kg (full system) |
| Dimensions | 330 × 320 × 170 mm |
| Compliance | HJ/T 399–2007, EPA Method 410.4 (adapted), Standard Methods 5220D (COD by Closed Reflux Colorimetric) |
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