Water Doctor
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| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | Dr-M1102 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Ion-Selective Electrode) |
| Range | 0–100 mg/L NH₃–N |
| Accuracy | ±10% FS |
| Detection Limit | 0 mg/L (defined by electrode sensitivity and signal-to-noise ratio) |
| Measurement Time | ≤60 s per parameter |
| Simultaneous Channels | 6 independent electrode ports |
| Display | 8-inch HD color capacitive touchscreen |
| Data Storage | 1,000,000 measurement records with timestamp, location (optional GPS), and electrode ID |
| Power Supply | Rechargeable Li-ion battery (≥12 h continuous operation) |
| IP Rating | IP68 for electrodes |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Connectivity | USB 2.0, optional Bluetooth 5.0 module |
| Software Compliance | Audit-trail enabled logging, user-access levels, data export in CSV/Excel format |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | Dr-M1202P |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Ion-Selective Electrode, ISE) |
| Measurement Range | 0–100 mg/L NH₃–N |
| Accuracy | ±10% of reading |
| Detection Limit | 0 mg/L (defined by electrode sensitivity and signal-to-noise ratio) |
| Measurement Time | ≤60 seconds per sample |
| Sample Throughput | Three independent electrode measurement positions |
| Display | 5-inch HD color TFT touchscreen |
| Language Support | English & Chinese |
| Data Storage | Up to 1,000,000 measurement records |
| Power Supply | Rechargeable Li-ion battery + USB Type-C AC/DC adapter (dual-mode operation) |
| Electrode Protection Rating | IP68 |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Electrode Cable Length | 3–5 m (customizable) |
| Built-in Thermal Printer | Yes |
| Data Interface | USB Type-C (for charging, data export, and firmware update) |
| Reading Modes | Real-time, Timed, and Interval |
| Auto Temperature Compensation | Yes |
| Sleep Mode | Configurable idle timeout |
| 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 | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9001 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelength Range | 340–900 nm |
| COD Range | 2–20,000 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ ±2% |
| LOD | 2 mg/L |
| Digestion & Measurement Time | 10 min |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | < 0.2 nm |
| Spectral Bandwidth | 4 nm |
| Transmittance Error | ±0.5% |
| Transmittance Repeatability | ≤ 0.2% T |
| Optical Stability | ≤ ±0.005 Abs/20 min |
| Resolution | 0.001 Abs |
| Light Source | Imported Cold LED (Lifespan > 100,000 h) |
| Pre-stored Calibration Curves | 1,000 |
| Data Storage Capacity | 1,000,000 records |
| Display | 8-inch HD capacitive touchscreen |
| Sample Holders | Rotatable 16-mm tube position (360°), dual cuvette positions (10 mm & 30 mm pathlength), and four independent digital electrode ports |
| Detection Modes | Absorbance, Transmittance, Concentration |
| Calibration Options | Single-point and multi-point standard calibration |
| Data Export | USB flash drive |
| Housing Material | Corrosion- and heat-resistant ABS |
| Dimensions | 392 × 315 × 170 mm |
| Weight | 4.4 kg |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9003 |
| Measurement Principle | Spectrophotometry (UV-Vis) |
| Detection Range | 0–100 mg/L (for both TP and TN) |
| Accuracy | ≤ ±5% |
| Detection Limit | Not specified (instrument-level LOD determined by method, not instrument spec) |
| Wavelength Range | 340–900 nm |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | < 0.2 nm |
| Spectral Bandwidth | 4 nm |
| Transmittance Error | ±0.5% |
| Transmittance Repeatability | ≤ 0.2% T |
| Absorbance Resolution | 0.001 Abs |
| Optical Stability | ≤ ±0.005 Abs / 20 min |
| Light Source | Imported cold-light LED (rated lifetime > 100,000 h) |
| Display | 8-inch HD capacitive touchscreen |
| Sample Holders | Rotatable tube holder (360°), dual cuvette positions (10 mm & 30 mm pathlength), four independent digital electrode ports |
| Calibration | Single- or multi-point calibration with up to 1000 pre-stored method curves |
| Data Storage | 1,000,000 measurement records |
| Interface | USB port for data export (U-disk compatible), built-in thermal printer |
| Housing Material | Corrosion- and heat-resistant ABS |
| Dimensions | 392 × 315 × 170 mm |
| Weight | 4.4 kg |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-W112 |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Detection Principle | Spectrophotometric (4-AAP Method per HJ 503-2009 / ISO 6439) |
| Primary Target Analyte | Volatile Phenols |
| Measured Parameters | Turbidity (0–20 NTU / 0–200 NTU / 0–1000 NTU), Color, Free Chlorine, Chlorine Dioxide, Total Hardness, Permanganate Index (COD<sub>Mn</sub>), Ammonia Nitrogen, Ozone, Urea, Iron, Manganese |
| Wavelength Range | 330–900 nm |
| Wavelength Accuracy | ±5 nm |
| Photometric Resolution | 0.001 Abs |
| Optical Stability | ≤±0.005 Abs/20 min |
| Repeatability | ≤±2% |
| Accuracy | ≤±5% |
| Light Source | Imported Long-Life Cold LED (≥100,000 h) |
| Sample Cell | 16 mm and 25 mm round cuvettes |
| Display | 5-inch HD color TFT capacitive touchscreen |
| Language Support | English & Chinese |
| Power Supply | Rechargeable Li-ion battery + AC adapter (dual-mode operation) |
| Data Storage | Up to 1,000,000 measurement records |
| Connectivity | USB Type-C (charging + data transfer) |
| Printing | Built-in thermal printer |
| Calibration Modes | Blank, Factor, and Multi-point Curve Calibration |
| Interference Compensation | Integrated chromaticity & optical attenuation correction algorithm |
| Housing Material | Corrosion-resistant ABS with IP67-rated enclosure |
| Compliance | Designed in accordance with HJ 503-2009 (China), ISO 6439:1984, and ASTM D1209/D5810 for phenolic compounds |
| 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 |
| Model | Dr-W660 |
| Measurement Principle | In-situ Fluorescence Detection |
| Chlorophyll-a Range | 0.01–500 µg/L |
| Phycocyanin (Cyanobacteria) Range | 0–40 × 10⁶ cells/L |
| Detection Limit | 0.01 µg/L (Chl-a), 1 × 10⁴ cells/L (Cyanobacteria) |
| Resolution | 0.01 µg/L (Chl-a), 10⁴ cells/L (Cyanobacteria) |
| Accuracy | ±5% FS |
| Display | 5-inch HD color capacitive touchscreen |
| Power | Rechargeable Li-ion battery (≥30-day standby), AC adapter support |
| Data Storage | 1,000,000 records |
| Interface | USB 2.0 |
| Printer | Integrated thermal printer |
| Sample Cell | 10 mm square quartz cuvette |
| Housing Material | Corrosion-resistant ABS |
| Operating Temp | 5–40 °C |
| Relative Humidity | <85% RH (non-condensing) |
| Compliance | Designed for field-deployable compliance with ISO 10260 (water quality — determination of chlorophyll-a by fluorescence), ASTM D7212-19 (standard test method for chlorophyll-a in water by fluorometric measurement) |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-WCI |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | DPD Colorimetric Spectrophotometry (ASTM D1253, ISO 7393-2, EPA 330.5) |
| Measuring Parameter | Free Chlorine (Residual Chlorine) |
| Range | 0.02–2.00 mg/L as Cl₂ |
| Accuracy | ≤ ±5% of reading |
| Repeatability | ≤ ±2% RSD |
| Detection Limit | 0.02 mg/L |
| Absorbance Resolution | 0.001 Abs |
| Wavelength Range | 330–900 nm |
| Wavelength Accuracy | ±5 nm |
| Optical Stability | ≤ ±0.005 Abs / 20 min |
| Display | 8-inch HD capacitive touchscreen |
| Language Support | English & Chinese |
| Sample Holders | Rotatable 16-mm cuvette position + fixed 25-mm cuvette position |
| Calibration Modes | Blank, Factor, and Multi-point Curve Calibration |
| Data Storage | Up to 1,000,000 measurement records |
| Connectivity | USB port for data export |
| Output Modes | Concentration (mg/L) or Absorbance (Abs) |
| Printer | Built-in thermal printer |
| Housing Material | Flame-retardant ABS with chemical resistance |
| Dimensions (W×D×H) | 392 × 315 × 170 mm |
| Light Source | Long-life imported cold LED (rated >100,000 hours) |