| Dissolved Oxygen Measuring Range | 0 to 20 mg/L |
| Saturation Measuring Range | 0 to 200% |
| Temperature Measuring Range | 0 to 50℃ |
| Measurement Principle | Fluorescence |
| Accuracy | ±0.3 mg/L |
| Temperature Accuracy | ±0.5℃ |
| Resolution | 0.01 mg/L; 0.01℃ |
| Calibration | One or two point calibration |
| Screen | 3.3-inch monochrome LCD screen |
| Air Pressure Measurement | 50 to 115kPa |
| Data Storage | Support |
| Waterproof | IP67 |
| Working Relative Humidity | 10 to 85% RH (no condensation) |
| Working Temperature | -10 to 60℃ |
| Storage and Transport Temperature | -15 to 65℃ |
| Storage and Transport Relative Humidity | 5 to 85%RH |
| Power Supply | 4×AA batteries |
| Dimension (L×W×H) | 200×101×36 mm |
| Weight | 420 g |
Portable Dissolved Oxygen Meter ADPOM-502 helps monitor oxygen levels in water treatment plants, aquaculture, food industries and research laboratories, ensuring optimal oxygen concentration maintenance in water samples.
| Dissolved Oxygen Measuring Range | 0 to 20mg/L；0 to 200% |
| Resolution Ratio | 0.01mg/L；0.1% |
| Measurement Accuracy | 0.05mg/L;0.5% |
| Dissolved Oxygen Concentration Measuring Range | 0 to 20 mg/L |
| Dissolved Oxygen Concentration Resolution | 0.01 mg/L |
| Dissolved Oxygen Concentration Accuracy | ≤±0.30 mg/L |
| COD Range: | 0 to 10000 mg/L (Customized) |
| Principle: | UV 254 |
| Resolution: | 0.01 mg/L |
| COD Test Method: | Potassium dichromate method<br/>Alkaline potassium permanganate |
| COD Measuring Range: | 10 to 15000mg/L<br/>0.5 to 25mg/L |
| COD Test Limit: | 10mg/L<br/>0.5mg/L |
.webp "Multi Parameter Water Quality Analyzer ADMWA-504")
| Absorbance Detection Range: | 0 to 3Abs |
| Optical Path Stability: | ≤±0.005Abs/30min |
| Absorbance Resolution: | 0.001Abs |
| COD Detection Method: | Potassium dichromate method<br/> Potassium permanganate method |
| COD Measuring Range: | 10 to 15000 mg/L |
| COD Lower Limit of Measurement: | 3 mg/L |
| Indication Error: | ≤±5% |
| Repeatability: | 0.03 |
| COD Detection Method: | Potassium dichromate method, Potassium permanganate method |
| Test Parameter: | Chlorine dioxide |
| Measuring Range: | 0.1 to 5 mg/L |
| Wavelength: | 520 nm |
| Test Parameter: | Ammonia nitrogen |
| Measuring Range: | 0.01 to 10mg/L |
| Wavelength: | 420 nm |
| Test Parameter: | Total Chlorine |
| Measuring Range: | 0.05 to 10 mg/L |
| Wavelength: | 520 nm |
| Test Parameter: | Residual Chlorine |
| Measuring Range: | 0.05 to 10 mg/L |
| Wavelength: | 520 nm |
| Test Parameter: | Ozone |
| Measuring Range: | 0.05 to 2.5mg/L |
| Wavelength: | 520 nm |
| Measuring Range: | 0 to 1000 NTU (Selectable ranges: 0 to 20 NTU, 0 to 200 NTU, 0 to 1000 NTU) |
| Accuracy: | ±0.1NTU or ±5%<br/> ±0.3NTU or ±8% |
| Repeatability: | ≤±0.1NTU at＜10NTU<br/> ≤±1% at ≥10NTU |
| TSS Measuring Range: | 0 to 1000mg/L |
| TSS Accuracy: | ±0.3mg/L or ±8% |
| TSS Repeatability: | <10mg/L: ≤±0.1mg/L <br/>≥10mg/L: ≤±1% |
| TSS Measuring Range: | 0.1 to 50000 mg/L |
| TSS Accuracy: | ± 5% FS (depending on the homogeneity of the activated sludge) |
| TSS Repeatability: | <1% |
| TDS Range: | 0 to 9999 ppm |
| Conductivity Range: | 0 to 9999 μS/cm |
| Temperature Range: | 0 to 80℃ or 32 to 176℃ |
| Measuring Range: | 0 to 10% |
| Measuring Temperature Range: | 0 to 99℃ |
| Resolution: | 0.01%，0.1℃ |
| Temperature Control Range: | Room temperature to 180℃ |
| Digestion Temperature Range: | 50 to 180℃ |
| Temperature Control Accuracy: | ±0.1℃ |
.webp "Thermoreactor ADTR-502")
| Temperature Control Range: | 45 to 180℃ |
| Digestion Temperature: | 45 to 180℃ |
| Temperature Control Accuracy: | ±0.1℃ |
| pH Measuring Range: | -2 to 16 pH |
| pH resolution: | 0.1pH |
| pH indication error: | ±0.2% F.S. |
.webp "ORP Meter ADOR-501")
| ORP Measuring Range: | -1000mV to 1000mV |
| ORP Resolution: | 1 mV |
| ORP measurement Accuracy: | ±0.5% F.S. |
| pH Measuring Range: | 0 to 14pH |
| pH Resolution: | 0.01pH |
| pH Measuring Accuracy: | ±0.01pH |
| pH Measuring Range: | 0 to 14 pH |
| pH Resolution: | 0.041 pH |
| pH Indication Error: | ±0.02 pH |