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Laboratory Water Quality Instruments
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Laboratory Water Quality Instruments

Laboratory water quality instruments offer high-precision analysis capabilities for a variety of water quality parameters under controlled conditions. These bench-top devices are essential for research, quality control, and compliance testing, delivering reliable and repeatable results for complex water analysis.


  • 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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  • 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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  • 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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  • Portable Ozone Meter for Water | DPD Photometric Method Ozone Tester, Handheld Water Quality Analyzer
    Measuring Range: 0.05–2.50 mg/L (ozone in water)
    Accuracy: ≤±0.05 mg/L (<1.0 mg/L); ≤±5% (≥1.0 mg/L)
    Principle: DPD photometric method, 520 nm LED light source
    Battery Life: >24 hours continuous use
    Protection: IP65 waterproof, portable lightweight design
    Dimension & Weight: 128×70×48 mm, 188 g (with battery)
    Operating Environment: 0–40°C, ≤90% RH (non-condensing)
     
    Model: PT-D01F
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  • PT-DH320 Online Water Hardness Sensor – Digital ISE Ion Sensor, High Accuracy, RS485/MODBUS, IP68 Waterproof
    Measurement Range: 0.2–40000 ppm, Resolution: 0.001 mg/L, Accuracy: ±5% F.S
    Temperature Range: 0–50℃, Resolution: 0.1℃, Accuracy: ±0.5℃, Automatic Temperature Compensation
    Digital Output: RS485, MODBUS-RTU; Easy integration with PLCs, computers, and IoT systems
    Two-point calibration; Adjustable slave address, baud rate, range, and coefficients online
    Housing Material: PPS, ABS, PC+Stainless Steel; Protection Grade: IP68
    Installation: Flow cell, Submerged, 3/4″ NPT threads; Cable length: 5 m
    Low power consumption: <1 W; Compact dimensions: Φ39×205 mm
     
    Model: PT-DH320
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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-DN85 Online Ammonia Nitrogen Sensor – Real-Time NH4-N Monitoring, Reagent-Free, Self-Cleaning, MODBUS/RS485, IP68
    Measurement Range: 0–100 mg/L NH4-N, Accuracy: ±10% or ±0.5 mg/L, Resolution: 0.01 mg/L
    pH Range: 0–10, Accuracy: ±0.1 pH, Resolution: 0.01
    Automatic compensation: pH, temperature, optional potassium ion
    Housing Material: POM, compact, corrosion-resistant; Protection Class: IP68, Maximum depth: 10 m
    Self-cleaning brush for low maintenance and long-term reliability
    Digital Output: RS-485, MODBUS protocol, strong anti-interference signal
    Power Supply: 12VDC±20%, Current <100 mA (<200 mA during cleaning), Cable Length: 10 m (customizable)
     
    Model: PT-DN85
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  • PT-DZ09 Digital Turbidity Electrode, 0–3000NTU, IP68 Waterproof, MODBUS/RS-485, Automatic Cleaning, Lab & Water Monitoring
    Measurement Principle: 90° scattered light method with near-infrared LED
    Turbidity Range: 0–3000 NTU (model-dependent: 0–20, 0–200, 0–1000, 0–3000 NTU)
    Accuracy & Resolution: High precision, resolution 0.01–1 NTU, accuracy ±0.3–8% depending on range
    Outputs & Interface: MODBUS/RS-485 digital interface, 4–20mA analog output
    Durability: IP68 waterproof, corrosion-resistant 316 stainless steel, suitable for long-term submerged use
    Additional Features: Built-in temperature sensor, automatic cleaning wiper, optional flow cell
    Installation & Power: 3/4″ NPT thread or flow-through mounting, 12VDC power supply, cable length 5 m
     
    Model: PT-DZ09
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  • Laboratory Ultrapure Water Systems – 10L/20L Capacity with Online TOC Monitoring for Pharmaceutical & Semiconductor Applications
    Water Production Capacity: 10L, 20L models (varies by series)
    Water Quality: Resistivity ≥ 18.25 MΩ·cm, TOC <1-3 ppb, Microorganisms ≤ 1 cfu/mL
    Inlet Water Source: Urban tap water; TDS ≤ 100-400 ppm depending on model
    Water Purification Process: Pre-treatment, RO (single or dual stage), EDI, polishing mixed bed, with optional boron removal
    Power Supply: AC220V, 50Hz, <1KW
    Host Size: 960×540×1420 mm (all models)
    Applications: Suitable for biochemical reagents, pharmaceutical preparations, molecular biology, semiconductor labs, HPLC, ICP-MS, PCR, cell culture, and high-precision instrument water supply
     
    Model: Pure series
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  • Portable Microbial Online Detection Instrument for Real-Time Water Quality Monitoring with 10,000 CFU Range
    Continuous microbial detection with 0–10,000 CFU/100ml range and 1 CFU precision
    Real-time results with 15-second frame response time and 10-minute initial response
    Portable design with 10-inch high-precision touchscreen and 32-bit data processor
    Suitable for purified water, ultrapure water, and water for injection (WFI)
    Data output via USB and 4-20 mA configurable analog signal
    Operating temperature range: 5°C–60°C; noise level ≤ 40dB(A)
    Stainless steel housing (40×40×25 cm), weighing 11 kg
     
    Model: P-CFU-1000A
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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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