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| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Distributor Status | Authorized Distributor |
| Model | UVM-4020 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Weighted Multi-Wavelength Ultraviolet Absorption Spectrophotometry (UV-Vis) |
| Wavelengths | 243 nm, 254 nm, 265 nm, 275 nm, and 290 nm (simultaneous acquisition with spectral weighting) |
| Measurement Ranges | 0–400 SAC, 0–200 SAC, 0–80 SAC |
| Cycle Time | Minimum 1 minute |
| Power Supply | 220 V ±10 V, 50/60 Hz, ~100 VA |
| Operating Environment | 5–40 °C, ≤90% RH (non-condensing, non-freezing) |
| Sample Flow Rate | 1–2 L/min |
| Sample Pressure | ≤50 kPa |
| Calibration | Automated zero/span calibration (optional reagent-free standard solutions) |
| Conversion Functions | Simultaneous real-time calculation of COD, BOD, TOC, and SAC using 30 built-in empirical correlation models |
| Cleaning | Scheduled internal tubing purge via user-defined intervals |
| Installation | Indoor wall- or rack-mounted configuration |
| Compliance | Designed for continuous operation under ISO 5667-3, ASTM D5540, and EPA Method 415.3-aligned monitoring workflows |
| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Status | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | COD-4200 |
| Price Range | USD 21,000 – 28,000 (est.) |
| Instrument Type | Online Analyzer |
| Measurement Principle | High-Temperature Acidic Potassium Dichromate Digestion with Photometric Detection |
| Accuracy | ±10% for concentrations ≥100 mg/L |
| Minimum Measurement Cycle | 20 minutes |
| Measuring Range | 30–4000 mg/L COD (extended range available upon consultation) |
| Repeatability | ≤±5% |
| Zero Drift | ±5 mg/L |
| Span Drift | ≤±5% |
| Resolution | <1 mg/L |
| Output Signals | RS-232, 4–20 mA (bidirectional communication & remote control supported) |
| Power Supply | 220 VAC ±10%, 50 Hz ±5% |
| Power Consumption | ~100 VA |
| Dimensions | 500 × 420 × 1550 mm (W × D × H) |
| Weight | ~90 kg |
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