- All
- Favorite
- Popular
- Most rated
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-W5000 |
| Instrument Type | Portable |
| Measurement Principle | Ultraviolet Fluorescence Spectrometry |
| Measurement Range | 0.005–1500 mg/L (as petroleum hydrocarbons) |
| Detection Limit | 0.005 mg/L |
| Accuracy | ±5% of reading |
| Detector | UV-optimized photomultiplier tube (PMT) with excitation at 254 nm and emission detection at 365 nm |
| Measurement Time | ≤120 seconds per sample |
| Display | 5-inch high-resolution color TFT touchscreen |
| Power Supply | Rechargeable lithium-ion battery (standby >30 days |
| Data Storage | 1,000,000 measurement records with timestamp, sample ID, and calibration history |
| Connectivity | USB 2.0 for data export and firmware update |
| Operating Environment | 5–40 °C, relative humidity <85% RH (non-condensing) |
| Sample Vessel | Dedicated quartz-cuvette-compatible disposable glass tubes (10 mm pathlength) |
| Extraction Solvent | n-Hexane (ASTM D7066-compliant) |
| Auto-Sleep | Activated after 5 minutes of inactivity |
| Built-in Thermal Printer | Yes |
| Color Compensation Algorithm | Real-time spectral correction for chromophoric interference |
| Onboard Calibration Module | User-accessible zero/span and multi-point calibration routines |
| Compliance | Designed to support ASTM D7678, ISO 9377-2, and EPA Method 1664B workflows (extraction-dependent) |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | Dr-M5100 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Principle | Infrared Spectrophotometry (Triple-Wavelength Absorption at 2930 cm⁻¹, 2960 cm⁻¹, and 3030 cm⁻¹) |
| Measurement Range | 0.0–800 mg/L (water matrix) |
| Detection Limit | 3σ ≤ 0.03 mg/L (based on 11 blank measurements) |
| Accuracy | ±2% relative error |
| Wavenumber Range | 2400–3400 cm⁻¹ (equivalent to 2941–4167 nm) |
| Wavenumber Accuracy | ±1 cm⁻¹ |
| Absorbance Range | 0.0000–2.0000 AU (T = 100%–1%) |
| Extraction Solvents | Perchloroethylene or Carbon Tetrachloride (compliant with HJ 637–2018) |
| Brand | DoctorWater |
|---|---|
| Origin | Hunan, China |
| Model | Dr-M5600 |
| Instrument Type | Portable |
| Measurement Principle | Infrared Spectrophotometry (Fourier-transform-free dispersive IR) |
| Measurement Range | 0.0–800 mg/L (oil in water) |
| Detection Limit | 3SD ≤ 0.03 mg/L (based on 11 blank measurements) |
| Wavenumber Accuracy | ±1 cm⁻¹ |
| Absorbance Resolution | 0.0001 AU |
| Scan Speed | Full-spectrum acquisition in 30 seconds |
| Wavenumber Range | 2400–3400 cm⁻¹ |
| Absorbance Range | 0.0000–2.0000 AU |
| Repeatability | RSD ≤ 0.5% (20–80 mg/L standard), RSD ≤ 5% (0.2 mg/L sample) |
| Linearity | R > 0.999 |
| Calibration | Preloaded EPA- and HJ-compliant calibration curves |
| Power Supply | Integrated rechargeable Li-ion battery + AC 220 V |
| Display | 10.1″ capacitive touchscreen |
| Data Output | Thermal printer + USB interface |
Show next