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Water Quality Testing Equipment
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Water Quality Testing Equipment

Water quality testing equipment is essential for accurately assessing the chemical, physical, and biological characteristics of water across a wide range of applications, including environmental monitoring, wastewater treatment, drinking water analysis, aquaculture, and industrial process control. This product category includes a comprehensive selection of instruments designed to meet professional standards for precision, reliability, and compliance with international testing protocols.


Our offerings cover a full spectrum of parameters critical to water quality evaluation. Multiparameter Water Quality Meters provide efficient, all-in-one testing solutions for simultaneous measurement of pH, conductivity, dissolved oxygen, turbidity, and more. For field-based applications, Portable Water Quality Analyzers deliver real-time results in compact, rugged formats.

Key single-parameter instruments include Dissolved Oxygen Meters, Turbidity Meters (Turbidimeters), and Chlorine Testers, each designed to meet specific regulatory and operational needs. COD and BOD Analyzers play a vital role in measuring organic pollution levels, while Heavy Metal Analyzers enable precise detection of toxic elements like lead, mercury, and arsenic in various water samples.

Colorimeters support rapid colorimetric analysis based on standard methods such as APHA platinum-cobalt, ideal for visual clarity and color contamination monitoring. Water Quality Test Kits offer simplified, cost-effective testing for routine checks in field and educational settings. For sample integrity and consistent results, Water Sampling Equipment ensures proper collection and handling protocols are followed. Additionally, Laboratory Water Quality Instruments provide high-precision bench-top solutions for research and advanced analysis in controlled environments.


Whether for regulatory compliance, environmental stewardship, or quality assurance, our water quality testing instruments are designed to deliver reliable data, streamline workflows, and support informed decision-making.


  • COD Analyzer PCOD-3M
    PCOD-3M COD Analyzer – Fast and Accurate Water COD Testing with Sealed Digestion and Touch Screen Display
    Function: Portable COD analyzer for rapid chemical oxygen demand testing in water using sealed catalytic digestion and colorimetric measurement
    Measurement Range & Accuracy: COD 5–2000 mg/L, indication error ≤ ±5%, repeatability ≤3%, anti-chlorine interference ≤2000 mg/L
    Display & Operation: Color touch screen with Chinese/English display, user-friendly interface, one-key recovery, self-calibration, USB connectivity, batch volume 16 samples
    Digestion & Temperature Control: Digestion temperature 165 °C, adjustable 1–9999 min, temperature control accuracy ±0.5 °C, optical stability absorbance drift <0.002A/20min
    Data Storage & Printing: Stores up to 300 standard curves and 1000 measurements, supports printing of single/multiple page results
    Power & Dimensions: AC 220V ±10%, <500W, main unit 5 kg, digestion instrument 5.5 kg, measuring instrument 400×310×158 mm, digester 355×260×135 mm
     
    Model: PCOD-3M
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  • Desktop Suspended Solids Analyzer
    Suspended Solids Analyzer PS Series – High-Precision Water Turbidity and Particulate Matter Testing
    Function: Suspended solids analyzer for measuring insoluble particulate matter in water and transparent liquids
    Measuring Range & Accuracy: 0–100 to 0–4000 mg/L, minimum indication 0.1–1 mg/L, linear error ±5% FS, repeatability ≤2%
    Display & Operation: LCD backlit display with date, time, measurement value and unit, touch keyboard, average measurement mode, data query, non-linear processing and smoothing
    Calibration & Data: Programmable multi-point automatic calibration, chromaticity compensation, built-in clock memory for real-time storage and long-term recall
    Power & Design: AC 220V ±10% 50Hz, 5W, desktop microcomputer configuration, high precision, maintenance-free long-life 100,000-hour light source
    Applications: Suitable for power plants, water treatment, sewage treatment, beverage, industrial water, pharmaceutical, hospitals, and environmental monitoring
     
    Model: PS-100、1000、4000
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  • Desktop Water Quality Analyzer
    Benchtop Water Quality Meter PL Series – Accurate DPD Photometric Detection for Residual Chlorine, CO₂, and Ozone
    Function: Benchtop water quality meter using DPD photometric method and photoelectric colorimetry for accurate water ion analysis
    Determination Parameters: Residual chlorine, total chlorine, combined residual chlorine, carbon dioxide, ozone
    Measuring Range & Accuracy: 0–5 mg/L (PL-1), 0–10 mg/L (PL-2), 0–2 mg/L (PL-3), minimum indication 0.01 mg/L, linear error ±5% FS, repeatability 3%
    Display & Operation: Touch buttons, LCD with backlight, low voltage indication, automatic shutdown after 10 minutes of inactivity
    Calibration & Light Source: Automatic zeroing and calibration, high-intensity long-life light source, 30-second warm-up, maintenance-free
    Power & Design: AC 220V ±10%, 50Hz, 3W, desktop design, stable and reliable for long-term use
     
    Model: PL Series
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  • Handheld Suspended Solids Analyzer
    Portable Suspended Solids Analyzer PS Series – Accurate Water Turbidity and Particulate Matter Testing
    Function: Portable suspended solids analyzer for measuring insoluble particulate matter in water and transparent liquids
    Measuring Range & Accuracy: 0–100 to 0–4000 mg/L, minimum indication 0.1–1 mg/L, linear error ±5% FS, repeatability ≤2%
    Display & Operation: LCD backlight display with date, time, measurement value and unit, touch keyboard, average measurement mode, data storage and query, automatic range switching
    Calibration & Data: Automatic zero adjustment, 1–5 point automatic calibration, chromaticity compensation, RS232 interface for connection to external micro-printer
    Power & Portability: AC 220V/50Hz, DC 1.5V (5 AA batteries), DC 7.5V adapter, long-life 100,000-hour light source, maintenance-free
    Applications: Suitable for power plants, water treatment, sewage treatment, beverage, industrial water, pharmaceutical, hospitals, and environmental monitoring
     
    Model: PS-100B、1000B、4000B
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  • Portable Turbidity Meter for Environment Detection
    Portable Turbidity Meter PGA Series – High-Precision Water Turbidity Testing with ISO7027 Standard and 90° Scattered Light
    Function: Portable turbidity meter for measuring suspended particles in water and transparent liquids using 90° scattered light
    Measuring Range & Accuracy: 0–50 to 0–4000 NTU, minimum readout 0.001–0.01 NTU, basic error ±6% (±2% F.S), repeatability ≤0.5%, zero drift ±0.5% F.S
    Display & Operation: LCD backlight display with date, time, measurement value and unit, touch keyboard, average measurement mode, data storage and query, range switch
    Calibration & Data: Automatic zeroing, 1–7 point automatic calibration, chromaticity compensation, RS232 interface for external micro-printer connection
    Power & Portability: AC 220V/50Hz, DC 1.5V (5 AA batteries), DC 7.5V adapter, long-life 100,000-hour light source, maintenance-free
    Applications: Suitable for waterworks, power plants, sewage treatment, beverage factories, industrial water, hospitals, environmental monitoring
     
    Model: PGA - B Series
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  • Portable Turbidity Meter
    PGZ Series Turbidity Meter – High-Precision Water Turbidity Testing for Pure Water, Mineral Water, and Tap Water
    Function: Turbidity measurement of water and transparent liquids using 90° scattered light principle
    Measuring Range & Accuracy: 0–20 NTU / 0–200 NTU, minimum indication 0.01–0.1 NTU, indication error ±8% (±2.5% F.S), repeatability ≤0.8%, zero drift ±0.8% F.S
    Display & Optical System: Large LCD display, high-precision optical path, chromaticity compensation to reduce color interference
    Light Source: High-intensity, long-life, 30-second warm-up, maintenance-free
    Applications: Suitable for pure water plants, mineral water plants, tap water plants, and low turbidity water analysis
    Design & Stability: Compact, stable, reliable positioning, low drift circuit system, maintenance-free operation
     
    Model: PGZ Series
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  • Portable COD Analyzer With Digester
    Portable COD Analyzer PCOD-810 – Rapid Water COD Testing with Catalytic Digestion and Narrowband Optical System
    Function: Portable COD analyzer for rapid chemical oxygen demand testing in water samples
    Measurement Range & Accuracy: COD 5–2000 mg/L, indication error ≤ ±5%, repeatability ≤3%, anti-chlorine interference ≤2000 mg/L
    Digestion & Temperature Control: Sealed catalytic digestion, PID automatic temperature control, digestion time 10 min, ±1°C accuracy, adjustable 1–9999 min
    Optical System & Data: Cold light narrowband interference system, absorbance drift <0.002A/20min, stores up to 199 COD values with timestamp, USB connection for data export
    Power & Portability: Host powered by 4 AA batteries, digester 220V/12V or car cigarette lighter, optional emergency battery, main unit 0.5 kg, digester 1 kg
    Display & Design: Large LCD screen, molded ABS chassis, IP65 waterproof and dustproof, optional printing function
     
    Model: PCOD-810
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  • Digital Colorimeter
    PF30 Digital Colorimeter for Textile, Leather, Plastic, and Paint Color Measurement
    Measurement Mode: SCI/SCE with CIELAB and CIELCH display
    Color Difference Formula: E*ab, Repeatability: E<0.05
    Measurement Aperture: φ4mm / φ8mm / φ16mm, Light Source: LED blue excitation
    Data Storage: 100 sample types, 200 testing samples, Interface: USB2.0 & RS-232
    Battery: Li-ion, up to 5000 measurements per charge, Charging Time: 8 hrs
    Display: 2.8-inch TFT true color screen, Resolution: 400×240
    Working Conditions: 0–40°C, RH<85%, Weight: 700g, Size: 199×68×90mm
     
    Model: PF30
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  • Residual Chlorine Detector (0-3mg/L)
    Portable Residual Chlorine Meter PT-C01F | DPD Photometric Water Quality Analyzer for Drinking, Swimming & Aquaculture Water
    Measurement Range: 0.05–3.00 mg/L residual chlorine
    Precision: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
    Wavelength: 520 nm, LED light source
    Operation: Intuitive display, simple operation, fast analysis with low reagent use
    Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
    Battery Life: Over 24 hours continuous use
    Principle: DPD spectrophotometric method
     
    Model: PT-C01F
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  • Chlorine dioxide detector (0.1-5.00mg/L)
    PT-C03F Portable Chlorine Dioxide Meter | DPD Photometric Water Quality Analyzer for Drinking, Swimming & Industrial Water
    Measurement Range: 0.1–5.00 mg/L chlorine dioxide
    Accuracy: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
    Wavelength: 520 nm, LED light source
    Operation: Intuitive display, simple operation, fast analysis with low reagent use
    Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
    Battery Life: Over 24 hours continuous use
    Principle: DPD photometric method, chlorine dioxide reacts with DPD to produce a red-colored solution
     
    Model: PT-C03F
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To Make The World Closer To The Truth
ZHEJIANG TOP INSTRUMENT CO.,LTD., as a subsidiary of TOP Cloud agri, is a high-tech enterprise specializing in the R&D, manufacturing, sales for laboratory equipments, and provision of comprehensive laboratory solutions.

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