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Product Details
Product Introduction
The HM-SCOD is a single-parameter handheld water quality detector designed exclusively for Chemical Oxygen Demand (COD) measurement. Covering four measurement ranges from 10 to 15,000 mg/L, it addresses the most frequently monitored parameter in industrial wastewater discharge compliance. The instrument uses spectrophotometric detection with an imported cold light source, automatic wavelength selection, and 0.001 absorbance sensitivity, delivering results that meet the precision requirements of HJ/T399-2007. At $643, the HM-SCOD offers the most accessible entry point into professional handheld water quality testing in the HM Instruments product lineup.
Applications
Industrial wastewater COD monitoring for discharge permit compliance
Municipal sewage treatment plant influent and effluent COD testing
Emergency water pollution incident response — rapid COD assessment
Textile dyeing and printing effluent organic pollution monitoring
Food and beverage processing wastewater COD measurement
Pharmaceutical and chemical industry wastewater organic load assessment
Functional Performance
Four COD measurement ranges (10–150, 20–450, 50–1,500, 500–15,000 mg/L) cover low-concentration drinking water to high-load industrial effluent.
Imported cold light source with stable optical performance and up to 100,000 hours lifespan.
Automatic wavelength selection eliminates manual filter changes between ranges.
0.001 absorbance resolution ensures precise low-concentration COD detection.
Android smart operating system with intuitive 3.5-inch color LCD touch screen.
Digestion-colorimetric integrated tube design simplifies sample preparation workflow.
80,000+ record onboard data storage for long-term monitoring campaigns.
Type-C, WiFi, and Bluetooth connectivity for data export and cloud platform upload.
5,600 mAh lithium battery supporting 8-hour continuous field operation.
325 g handheld form factor (190 × 77 × 72 mm) for true portability.
Main Parameters
| Parameter | Specification |
|---|---|
| Test item | Chemical Oxygen Demand (COD) |
| Reference standard | HJ/T399-2007 |
| Measurement range | 10–150 mg/L, 20–450 mg/L, 50–1,500 mg/L, 500–15,000 mg/L |
| Wavelength selection | Automatic |
| Repeatability | <0.5% |
| Stability | <0.5% |
| Sensitivity (absorbance) | 0.001 |
| Sample compatibility | 16 mm (round), 22 mm (round) |
| Colorimetric method | Digestion-colorimetric integrated tube |
Technical Parameters
| Parameter | Specification |
|---|---|
| Operating system | Android smart operating system |
| Display | 3.5-inch color LCD touch screen |
| Light source | Imported cold light source, lifespan up to 100,000 hours |
| Data storage | Over 80,000 records |
| Communication | Type-C, WiFi, Bluetooth |
| Printer | Optional portable Bluetooth printer |
| Battery | 5,600 mAh lithium battery |
| Continuous working time | 8 hours |
| Power supply | 5V/DC |
| Operating environment | 0–50 °C, 0–90% relative humidity |
| Dimensions | 190 × 77 × 72 mm |
| Weight | 325 g |
| Supported languages | Simplified Chinese or English |
| Smart digestor (included) | 6-chamber, PID temperature control ±0.5 °C, max 200 °C, 400 W, 245 × 163 × 192 mm |
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