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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.


  • ORP Sensor Electrode PT-DR31 – Online Oxidation-Reduction Potential Measurement, MODBUS/RS485, IP68 Waterproof
    Measurement Range: -2000 to 2000 mV, Accuracy: ±15%, Resolution: 1 mV
    Electrode Material: PTFE anti-fouling, Platinum, PC housing
    Gel electrolyte resists interference from external ions and pressure changes
    Digital output: MODBUS/RS485; Calibration: One-point calibration
    Installation: 3/4″ NPT Thread, Cable length: 5 m (customizable)
    Operating Temperature: 0–60℃, Waterproof Rating: IP68
    Low power consumption: <0.5 W
     
    Model: PT-DR31
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  • PT-DpH07 Online pH Composite Electrode – High Accuracy, Fast Response, IP68 Waterproof, MODBUS/RS485, 0-14pH
    Measurement Range: 0.00–14.00 pH, Accuracy: ≤±0.02 pH, Resolution: 0.01 pH
    Response Time: 20 sec; Drift: ≤±0.1 pH/24h; Sensitive Membrane Impedance: ≤500 MΩ
    Stable reference system: Ag/AgCl with gel electrolyte, excellent anti-pollution performance
    PTFE diaphragm for long-term online monitoring without clogging
    Operating Temperature: 0–60℃, Waterproof Rating: IP68
    Output Mode: MODBUS / RS-485, Power Supply: 12–24 VDC, Rated Power: <0.5 W
    Installation: 3/4″ NPT Thread, suitable for online water quality monitoring
     
    Model: PT-DpH07
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  • PT-DE26 Online Conductivity Sensor – RS485/MODBUS, Temperature Compensated, IP68 Waterproof, 0–200 mS/cm
    Measuring Range: 0–20 mS/cm, 0–200 mS/cm | Accuracy: ≤±1% | Response Time: ≤15 s
    Measured Variables: Conductivity, Resistivity, TDS, Salinity | Temperature Range: 0–60℃, Accuracy: ≤±0.3℃
    Built-in temperature sensor with automatic water temperature compensation
    Digital Output: RS-485, MODBUS-RTU; Two-way communication, low power consumption (0.5 W)
    Construction: Graphite electrode, ink/epoxy/ABS housing, 316L liquid connection, IP68 waterproof
    Installation: Flow-through tank, pipe, or sink mounting; Coaxial design ensures stability and anti-interference
    Power Supply: 12–24 VDC; Cable length: 5 m standard, customizable
     
    Model: PT-DE26
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  • P9011 Benchtop Platinum-Cobalt Colorimeter | Accurate Water Chromaticity Analyzer
    Measuring Range: 0–50 Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 1 chromaticity
    Accuracy & Repeatability: ±5% F.S, repeatability ≤3%
    Features: Desktop type, stable performance, maintenance-free, cost-effective
    Display & Measurement: Large-screen LCD digital display, direct chromaticity reading
    Calibration & Method: Photoelectric colorimetry, calibrated with platinum-cobalt standard solution
    Light Source & Durability: High-intensity, long-life light source, ready in 30 seconds
     
    Model: P9011
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  • P9012CB Handheld Portable Colorimeter | Accurate Water Chromaticity Analyzer
    Measuring Range: 0–50, 0–500 Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 0.1 chromaticity
    Accuracy & Repeatability: ±5% F.S, repeatability ≤1.5%
    Features: Handheld, portable, AC & DC dual power, low voltage indication, automatic power off, can be equipped with micro-printer
    Display & Measurement: LCD backlit display, direct chromaticity reading, turbidity compensation system
    Calibration: Programmable 1–7 point automatic multi-point calibration
    Light Source & Durability: High-intensity 100,000-hour long-life light source, maintenance-free, built-in memory storage for last 20 measurements
     
    Model: P9012CB
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  • P9011B Portable Platinum-Cobalt Colorimeter | Accurate Water Chromaticity Analyzer
    Measuring Range: 0–50 Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 1 chromaticity
    Accuracy & Repeatability: ±5% F.S, repeatability ≤3%
    Features: Portable design, AC/DC power, low voltage indication, automatic shutdown, stable and maintenance-free operation
    Display & Measurement: Large LCD digital display, high-precision optical path, direct reading using platinum-cobalt standard solution
    Light Source: High-intensity, long-life, works after 30 seconds warm-up
    Technology: Photoelectric colorimetry with multiple independent design patents
     
    Model: P9011B
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  • P9012AB Portable Colorimeter | High-Precision Hazen Pt-Co PCU Water Quality Analyzer
    Measuring Range: 0–50 / 0–500 Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 0.1 chromaticity
    Accuracy & Repeatability: ±3% F.S, repeatability ≤1.5%
    Features: Portable microcomputer system, touch keyboard, LCD backlit display, turbidity compensation, self-diagnosis, direct chromaticity reading
    Calibration: Fast, programmable 1–7 point automatic multi-point calibration
    Data Storage: Built-in clock memory, stores latest 20 measurement sets, long-term storage and recall
    Power & Interface: AC 220V/50Hz or DC 7.5V/0.2A, RS232 interface, optional micro-printer
     
    Model: P9012AB
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  • P9012C Platinum Cobalt Colorimeter | High-Precision Hazen Pt-Co PCU Analyzer for Water and Industrial Applications
    Measuring Range: 0–50 / 0–500 Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 0.1 degrees
    Accuracy & Repeatability: ±5% F.S, repeatability ≤1.5%
    Features: Microcomputer system, touch keyboard, LCD backlit display, direct chromaticity reading, turbidity compensation, self-diagnosis prompts
    Calibration: Fast, programmable 1–7 point automatic multi-point calibration
    Data Storage: Built-in clock memory, stores latest 20 measurement sets, long-term storage and recall
    Power & Interface: AC 220V ±10% 50Hz/5W, standard RS232 interface, printer-compatible
     
    Model: P9012C
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  • Benchtop Colorimeter P9012A | High-Precision Chromaticity Analyzer for Water and Industrial Applications
    Measuring Range: 0–50 / 0–500 NTU, chromaticity units Hazen, Pt-Co, PCU, mg Pt/L
    Minimum Readout: 0.1 NTU / chromaticity
    Accuracy & Repeatability: ±3% F.S, repeatability ≤1.5%
    Features: Microcomputer system, touch keyboard, LCD backlit display, direct chromaticity reading, turbidity compensation, self-diagnosis prompts
    Calibration: Programmable multi-point calibration (1–7 points) for high accuracy
    Data Storage: Built-in clock memory, stores latest 20 measurement sets, long-term storage and recall
    Power & Interface: AC 220V ±10% 50Hz/5W, standard RS232 interface, optional built-in printer
     
    Model: P9012A
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  • Benchtop Turbidity Meter PGZ Series | High-Precision Water Turbidity Analyzer for Laboratory and Industrial Use
    Measuring Principle: 90° scattered light for accurate turbidity analysis
    Measuring Range: 0–20 / 0–200 / 0–800 NTU depending on model
    Minimum Readout: 0.01–0.1 NTU (model dependent)
    Accuracy & Repeatability: ±6% F.S, repeatability ≤0.5%, zero drift ±0.5% F.S
    Features: High-intensity long-life light source, chromaticity compensation, large LCD display, reliable optical path, stable long-term operation
    Applications: Suitable for low, medium, and high turbidity water samples in power plants, waterworks, beverage and pharmaceutical industries, sewage treatment, environmental monitoring
    Additional: Easy operation, cost-effective design, fast warm-up within 30 seconds
     
    Model: PGZ-1、200、800
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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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