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Hunan Water Doctor Technology Co., Ltd.

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BrandDr-Water
OriginHunan, China
ModelDr-W100
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection ParametersTurbidity, Color, Free Chlorine, Chlorine Dioxide, Total Hardness, Permanganate Index (COD<sub>Mn</sub>), Ammonia Nitrogen, Ozone, Urea, Iron, Manganese
Turbidity Ranges0–20 NTU / 0–200 NTU / 0–1000 NTU
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Optical Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Light SourceImported Cold LED (Lifespan >100,000 h)
Sample Cell16 mm & 25 mm Cuvettes
Display5-inch HD Color Touchscreen
Power SupplyRechargeable Li-ion Battery + AC Adapter
Data Storage1,000,000 Records
ConnectivityUSB Type-C (Charging & Data Transfer)
Calibration ModesBlank, Factor, and Calibration Curve
Readout UnitsConcentration or Absorbance
Housing MaterialCorrosion-Resistant ABS
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BrandDoctorWater
ModelDr-T9905
TypePortable/Water Quality Analyzer
Detection PrincipleDual-Mode Photometric & Electrochemical
Measurable ParametersCOD (2–20,000 mg/L), Ammonia-N, Total Phosphorus, Total Nitrogen, Heavy Metals, pH, Dissolved Oxygen, Conductivity, Turbidity, Temperature, ORP, TDS, Chlorophyll-a, Phycocyanin, SS, Residual Chlorine, Oil-in-Water, Salinity
Wavelength Range340–900 nm
Wavelength Accuracy±1 nm
Wavelength Repeatability<0.2 nm
Spectral Bandwidth4 nm
Transmittance Error±0.5%
Transmittance Repeatability≤0.2% T
Absorbance Resolution0.001 Abs
Optical Stability≤±0.005 Abs/20 min
Pre-stored Calibration Curves600
Data Storage Capacity1,000,000 records
Display5-inch HD capacitive touchscreen
Power SupplyRechargeable Li-ion battery + AC adapter
ComplianceGB 11893–1989 (Total Phosphorus), GB/T 11894–1989 (Total Nitrogen), ISO 7027, ASTM D5810, EPA Method 351.2 (adapted)
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BrandDoctorWater
OriginHunan, China
ModelDr-T8000
Instrument TypeLaboratory Water Quality Analyzer
Detection PrincipleSpectrophotometry (UV-Vis)
Measurable ParametersCOD, Ammonia Nitrogen, Total Phosphorus, Total Nitrogen, Turbidity, Color, Suspended Solids, Heavy Metals, and >50 additional water quality indicators
Wavelength Range190–1100 nm
Wavelength Accuracy±1 nm
Wavelength Repeatability<0.2 nm
Spectral Bandwidth2 nm
Photometric Accuracy (Transmittance)±0.5%
Photometric Repeatability≤0.2% T
Absorbance Resolution0.001 Abs
COD Range2–20,000 mg/L
Measurement Repeatability≤±2%
Optical SystemDual-beam with Grating Monochromator
Light SourcesImported Deuterium Lamp (UV), Imported Tungsten-Halogen Lamp (Vis)
Display7-inch HD capacitive touchscreen
Sample HoldersDual independent positions — for 16-mm round cuvettes (360° rotational detection) and standard 10-mm square cuvettes
CalibrationSingle-point and multi-point calibration
Pre-stored Calibration Curves1200+ (compliant with HJ/T 399–2007, HJ 535–2009, GB 11893–1989, HJ 636–2012)
Data Storage1,000,000 measurement records
OutputBuilt-in thermal printer
InterfaceUSB port for data export
ComplianceDesigned to meet Chinese environmental monitoring standards
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BrandDoctorWater
OriginHunan, China
ModelDr-YZ60
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection ParameterspH, Dissolved Oxygen (DO), Ammonia Nitrogen (NH₃-N), Nitrate Nitrogen (NO₃⁻-N), Nitrite Nitrogen (NO₂⁻-N), Water Temperature
pH Measurement Range6.5–8.5 pH
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Optical Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Light SourceImported Cold Light LED (Lifespan > 100,000 h)
Sample Cell16 mm & 25 mm Cuvettes
Display5-inch HD Color Touchscreen
Power SupplyRechargeable Li-ion Battery + AC Adapter
Data Storage Capacity1,000,000 Records
InterfaceUSB Type-C (Charging & Data Transfer)
Calibration ModesBlank, Factor, and Calibration Curve
Readout ModesConcentration & Absorbance
Housing MaterialCorrosion-Resistant ABS
PrintingBuilt-in Thermal Printer
Language SupportEnglish & Chinese
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BrandDoctorWater
OriginHunan, China
ModelDr-W5
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection ParametersFree Chlorine, Total Chlorine, Chlorine Dioxide, Available Chlorine, Combined Chlorine (Disinfectant Residuals)
Measurement Range (Free Chlorine)0.02–2.00 mg/L
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Optical Stability≤ ±0.005 Abs/20 min
Display5-inch HD Color Touchscreen
Light SourceImported Cold Light LED (Lifespan >100,000 h)
Sample Format16 mm & 25 mm Cuvettes
Power SupplyRechargeable Li-ion Battery + AC Adapter
Data StorageUp to 1,000,000 Records
InterfaceUSB Type-C (Charging & Data Transfer)
Calibration ModesBlank, Factor, and Calibration Curve
Readout ModesConcentration (mg/L) or Absorbance (Abs)
Housing MaterialCorrosion-Resistant ABS
Operating Temperature0–50 °C
Operating Humidity0–95% RH (non-condensing)
Rated Power1.2 W
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BrandDoctorWater
OriginHunan, China
ModelDr-W380
Instrument TypeOnline Water Quality Analyzer
Detection ParametersCOD, Ammonia Nitrogen, pH, Dissolved Oxygen (DO), Conductivity, Turbidity, Temperature, ORP, TDS, Chlorophyll-a, Phycocyanin (Blue-Green Algae), Suspended Solids (SS), Residual Chlorine, Oil-in-Water, Salinity
pH Measurement Range0–14 pH
Display10.1-inch Android-based industrial capacitive touchscreen
Flow Rate5–30 L/h
InstallationWall-mounted
Power SupplyAC 220 V ±15%, 50 Hz ±5%
Power Consumption<50 W
Operating Temperature0–60 °C
Relative Humidity<90% RH
Dimensions (L×W×H)428 × 308 × 650 mm
Communication InterfacesRS-485, Ethernet, 4G, Wi-Fi
CalibrationOn-device electrode calibration via touchscreen
Alarm FunctionFault detection with remote alerting
Housing DesignElectrically isolated chambers, corrosion-resistant materials, integrated air-bleed valve in flow cell
Measurement ModeContinuous or programmable intermittent monitoring
Sample PathSeries-connected flow-through cell with low-volume consumption
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BrandDoctorWater
OriginHunan, China
ModelDr-T9000
Instrument TypeLaboratory Water Quality Analyzer
Detection PrincipleSpectrophotometry & Electrochemical Sensing
Measurable ParametersCOD (2–20,000 mg/L), Ammonia-N, Total Phosphorus, Total Nitrogen, pH, Dissolved Oxygen (DO), Conductivity, ORP, Chlorophyll-a, Turbidity, Color, TDS, Oil-in-Water, Heavy Metals (via compatible reagent kits)
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range340–900 nm
Wavelength Accuracy±1 nm
Wavelength Repeatability< 0.2 nm
Spectral Bandwidth4 nm
Transmittance Error±0.5%
Transmittance Repeatability≤ 0.2% T
Absorbance Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Light SourceImported Cold LED (Lifespan > 100,000 h)
Pre-stored Calibration Curves1,000
Data Storage Capacity1,000,000 records
Display8-inch HD capacitive touchscreen
InterfaceFully localized Chinese UI (English optional)
Sample HoldersRotatable tube holder (360°), dual cuvette positions (10 mm & 30 mm pathlength), four independent digital electrode ports
Auto-calibrationSingle-point and multi-point calibration support
Data OutputUSB export, thermal printer, on-screen curve visualization, real-time filtering
Compliance StandardsHJ/T 399–2007 (COD), HJ 535–2009 (Ammonia-N), GB 11893–1989 (Total Phosphorus), ISO 5815-1:2016 (DO), ISO 7888:2012 (Conductivity), ASTM D1293 (pH), EPA 180.1 (Turbidity)
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BrandDoctorWater
OriginHunan, China
ModelDr-W50
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection PrincipleColorimetric Method
Measurable ParametersTurbidity, Free Chlorine, Total Chlorine, Combined Chlorine, Ozone, Urea, pH, Calcium Hardness, Total Alkalinity, Cyanuric Acid, Water Temperature
Turbidity Range0–20 NTU / 0–200 NTU (via Scattered/Transmitted Light Method)
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Absorbance Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Light SourceImported Cold LED (Lifespan >100,000 hrs)
Display5-inch HD Color Touchscreen
Sample Format16 mm / 25 mm Cuvettes
Power SupplyRechargeable Li-ion Battery + AC Adapter
Data StorageUp to 1,000,000 Records
ConnectivityUSB Type-C (Charging & Data Transfer)
Calibration ModesBlank, Factor, and Calibration Curve
ReportingConcentration or Absorbance Readout
Housing MaterialCorrosion- and Heat-Resistant ABS
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BrandDoctorWater
OriginHunan, China
ModelDr-M1200P
Instrument TypePortable / Handheld Water Quality Analyzer
Detection PrincipleElectrochemical Sensing (pH, DO, ORP, Conductivity, TDS), Optical Sensing (Turbidity, Chlorophyll-a, Phycocyanin, Oil-in-Water, SS), Amperometric/Colorimetric (Residual Chlorine, COD, Ammonia-N)
Measurement RangepH: 0–14
Temperature0–50 °C
Dissolved Oxygen0–20 mg/L (or 0–200% saturation)
Conductivity0–200 mS/cm
Turbidity0–1000 NTU
ORP−1500 to +1500 mV
TDS0–100,000 ppm
Salinity0–50 ppt
Residual Chlorine0–5 mg/L
COD0–1500 mg/L (via preloaded reagent vials)
Ammonia-N0–100 mg/L (via preloaded reagent vials)
Chlorophyll-a0–200 µg/L
Phycocyanin0–100 µg/L
Oil-in-Water0–100 ppm
Suspended Solids0–5000 mg/L
Electrode Interface3 independent digital sensor ports
Display5-inch capacitive color touchscreen
Data Storage1,000,000 measurement records with timestamp, location (optional GPS), and operator ID
Power SupplyRechargeable Li-ion battery (≥16 h continuous operation)
IP RatingIP68 probe housing
Operating Environment0–50 °C, ≤85% RH (non-condensing)
ComplianceMeets ASTM D1293 (pH), ASTM D888 (DO), ISO 7888 (conductivity), ISO 7027 (turbidity), USP <643> (TOC proxy via conductivity), and supports GLP-compliant data logging with audit trail metadata
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BrandDoctorWater
OriginHunan, China
ModelDr-M1100
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection PrincipleElectrochemical Sensing
Measured ParameterspH, Dissolved Oxygen (DO), Electrical Conductivity (EC), Turbidity, Temperature, Oxidation-Reduction Potential (ORP), Total Dissolved Solids (TDS), Chlorophyll-a, Phycocyanin (Blue-Green Algae), Suspended Solids (SS), Residual Chlorine, COD (via electrochemical proxy), Ammonia-Nitrogen (NH₃-N), Hydrocarbon Oil, Salinity
pH Range0–14 pH
Display8-inch HD color TFT touchscreen
Data Storage1,000,000 measurement records
Power SupplyRechargeable Li-ion battery + AC adapter
Electrode Protection RatingIP68
Operating Environment0–50 °C, ≤85% RH (non-condensing)
Electrode Cable Length3–5 m (customizable)
CommunicationUSB interface
Reading ModesReal-time, Timed, Interval
Auto Temperature CompensationYes
Number of Independent Sensor Ports6 (expandable to 8–12)
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BrandDoctorWater
OriginHunan, China
ModelDr-T9900
Instrument TypePortable/Handheld Water Quality Analyzer
Detection PrinciplesSpectrophotometry (340–900 nm) & Electrochemical Sensing
Measured ParametersCOD (2–20000 mg/L), Ammonia-N, Total Phosphorus, Total Nitrogen, Heavy Metals, pH, Dissolved Oxygen (DO), Conductivity, Turbidity, Temperature, ORP, TDS, Chlorophyll-a, Cyanobacteria, Suspended Solids, Residual Chlorine, Oil-in-Water, Salinity, and >80 additional parameters
Wavelength Accuracy±1 nm
Wavelength Repeatability<0.2 nm
Spectral Bandwidth4 nm
Transmittance Error±0.5%
Transmittance Repeatability≤0.2% T
Absorbance Resolution0.001 Abs
Optical Stability≤±0.005 Abs/20 min
Pre-stored Calibration Curves600
Data Storage Capacity1,000,000 records
Display5-inch HD capacitive touchscreen
Power SupplyRechargeable Li-ion battery + AC adapter
ComplianceHJ/T 399–2007, HJ 535–2009, GB 11893–1989
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BrandWater Doctor
OriginHunan, China
ModelDr-W112
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection PrincipleSpectrophotometric (4-AAP Method per HJ 503-2009 / ISO 6439)
Primary Target AnalyteVolatile Phenols
Measured ParametersTurbidity (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 Range330–900 nm
Wavelength Accuracy±5 nm
Photometric Resolution0.001 Abs
Optical Stability≤±0.005 Abs/20 min
Repeatability≤±2%
Accuracy≤±5%
Light SourceImported Long-Life Cold LED (≥100,000 h)
Sample Cell16 mm and 25 mm round cuvettes
Display5-inch HD color TFT capacitive touchscreen
Language SupportEnglish & Chinese
Power SupplyRechargeable Li-ion battery + AC adapter (dual-mode operation)
Data StorageUp to 1,000,000 measurement records
ConnectivityUSB Type-C (charging + data transfer)
PrintingBuilt-in thermal printer
Calibration ModesBlank, Factor, and Multi-point Curve Calibration
Interference CompensationIntegrated chromaticity & optical attenuation correction algorithm
Housing MaterialCorrosion-resistant ABS with IP67-rated enclosure
ComplianceDesigned in accordance with HJ 503-2009 (China), ISO 6439:1984, and ASTM D1209/D5810 for phenolic compounds
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BrandDoctorWater
OriginHunan, China
ModelDr-W500
Instrument TypeLaboratory Water Quality Analyzer
Detection PrincipleSpectrophotometry
Measured ParametersTurbidity, Color, Free Chlorine, Chlorine Dioxide, Total Hardness, Permanganate Index (COD<sub>Mn</sub>), Ammonia Nitrogen, Ozone, Urea, Iron, Manganese
Turbidity Range0–20 NTU / 0–200 NTU / 0–1000 NTU
Color Range0.0–50.0°Hazen / 0–500°Hazen
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Absorbance Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Display8-inch HD color capacitive touchscreen
Language SupportEnglish & Chinese
Sample Holders360° rotatable cuvette port + standard 25 mm cuvette port
Light SourceImported long-life cold LED (≥100,000 h)
Calibration ModesBlank, Factor, and Calibration Curve
Data StorageUp to 1,000,000 measurement records
ConnectivityUSB interface
Output ModesConcentration or Absorbance
PrinterBuilt-in thermal printer
Housing MaterialCorrosion- and heat-resistant ABS
Dimensions392 × 315 × 170 mm
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BrandDoctor Water
OriginHunan, China
ModelDr-T9903
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection PrinciplesSpectrophotometry (Molybdate Blue for Total Phosphorus
Measured ParametersCOD, Ammonia-N, Total Phosphorus, Total Nitrogen, Heavy Metals (e.g., Cu²⁺, Pb²⁺, Cd²⁺ via colorimetric kits), pH, Dissolved Oxygen, Conductivity, Turbidity, Temperature, ORP, TDS, Chlorophyll-a, Phycocyanin, SS, Free Chlorine, Oil-in-Water, Salinity, etc. (80+ parameters)
COD Range2–20,000 mg/L
Wavelength Range340–900 nm
Wavelength Accuracy±1 nm
Wavelength Repeatability<0.2 nm
Spectral Bandwidth4 nm
Transmittance Error±0.5%
Transmittance Repeatability≤0.2% T
Absorbance Resolution0.001 Abs
Optical Stability≤±0.005 Abs/20 min
Photometric Repeatability≤±2%
Photometric Accuracy≤±5%
Pre-stored Calibration Curves600
Data Storage Capacity1,000,000 records
Power SupplyRechargeable Li-ion battery + AC adapter
Display5-inch HD capacitive touchscreen
Interface LanguageChinese (English optional)
Enclosure MaterialCorrosion-resistant ABS
IP RatingIP67-rated carry case included
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BrandDr-Water
OriginHunan, China
ModelDr-W200
Instrument TypePortable/HANDHELD Water Quality Analyzer
Detection PrincipleColorimetric Method
Measured ParametersTurbidity (0–20 NTU / 0–200 NTU / 0–1000 NTU), Color, Free Chlorine, Chlorine Dioxide, Permanganate Index (COD<sub>Mn</sub>), pH, Odor & Taste, Visible Particulates, Total Coliforms, Heterotrophic Plate Count (HPC)
Repeatability≤ ±2%
Accuracy≤ ±5%
Wavelength Range330–900 nm
Wavelength Accuracy±5 nm
Optical Resolution0.001 Abs
Optical Stability≤ ±0.005 Abs/20 min
Display7-inch HD color TFT capacitive touchscreen
Light SourceImported long-life cold LED (≥100,000 h)
Detection PositionsDual-path 16 mm & 25 mm cuvette slots + dedicated electrode port
Calibration ModesBlank, Factor, and Multi-point Curve Calibration
Data Storage1,000,000 records with timestamp, sample ID, and operator tag
Power SupplyRechargeable Li-ion battery (field operation) + AC adapter (lab continuity)
Battery DiagnosticsReal-time SOC monitoring with low-power alert
ConnectivityUSB 2.0 interface
PrintingIntegrated thermal printer
Operating Environment0–50 °C, RH 0–95% (non-condensing)
Housing MaterialFlame-retardant ABS with chemical resistance
Rated Power1.2 W
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