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Chemical Analysis Instruments
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Chemical Analysis Instruments

This category includes a wide range of chemical analysis instruments used for the quantitative and qualitative determination of substances in laboratory samples. These products are commonly applied in food quality testing, agricultural and environmental analysis, pharmaceutical development, and academic research.


Available product lines include:

  • Kjeldahl Nitrogen Analyzers – for determining nitrogen and protein content in compliance with international standards.

  • Digestion Furnaces – provide controlled heat for sample digestion, supporting nitrogen and elemental testing workflows.

  • Fat Analyzers – used to measure fat content in food, feed, and agricultural products, including Soxhlet and rapid extraction systems.

  • Fiber Analyzers – designed for crude fiber and dietary fiber determination in grains, feed, and plant materials.

  • Sulfide Analyzers – determines sulfide levels in water, wastewater, soil, or industrial samples for environmental and chemical analysis.

  • Ion Analyzers – instruments for analyzing ionic concentrations in water, soil, and chemical solutions, including automated cation exchange systems.

  • Near-Infrared Analyzers (NIR) – provide rapid, non-destructive analysis of moisture, protein, starch, and oil content in grains and food products.

  • Exhaust Gas Treatment Units – essential for neutralizing acid or toxic gases released during digestion or chemical reactions, ensuring laboratory safety and compliance.

  • Atomic Spectrometers & Elemental Analyzers – essential for precise detection and quantification of metal and non-metal elements in liquid or solid samples, supporting applications in environmental monitoring, food safety, pharmaceutical analysis, and materials research.


These instruments are essential tools for laboratories that require consistent performance, precise results, and compatibility with standard testing protocols.


  • ZDDN-8900 Fully Automatic 40-Sample Kjeldahl Nitrogen and Protein Analyzer for High-Throughput Lab Testing
    ZDDN-8900 Fully Automatic Kjeldahl Analyzer with 40-sample autosampler for high-throughput nitrogen and protein analysis
    Analysis range 0.1–240 mgN with recovery rate 99–101% and RSD ≤0.5%
    10-inch color LCD touchscreen with 1 million data storage capacity and built-in protein coefficient calculation
    Automatic titration and distillation, alkali pipeline cleaning, and sample weighing data upload for high efficiency
    Distillation time and titration speed freely adjustable, standard/drip while steaming titration mode
    Energy-saving built-in refrigeration system, safe alkali addition, automatic shutdown after 60 minutes
    Integrated printing, communication interfaces include 232, Ethernet, computer, electronic balance, and reagent level monitoring
     
    Model: ZDDN-8900
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  • ZDDN-II Automatic Kjeldahl Protein Analyzer for Food, Feed, Soil, and Water Testing
    Automatic Kjeldahl Protein Analyzer with microcomputer control for accurate nitrogen and protein determination in food, feed, soil, water, dairy, and chemical samples
    Supports automatic and manual modes, with automatic distillation, water addition, and water level control
    Large LCD touch screen for easy operation, stores up to 250 analysis procedures
    Measurement range 0.1–200 mgN (0.1%–99% nitrogen), recovery rate ≥99%, relative standard deviation <±1%
    Distillation time 5–15 minutes, voltage AC 220V/50Hz, cooling water consumption 3L/min
    Durable, acid- and alkali-resistant ABS and plastic spray steel construction, with multiple safety protections
     
    Model: ZDDN-II
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  • PDN Semi-Automatic Kjeldahl Nitrogen Analyzer for Food, Feed, Soil, and Water Testing
    Semi-automatic Kjeldahl Nitrogen Analyzer for accurate determination of nitrogen content in food, feed, soil, water, dairy, and chemical samples
    Composed of digestion furnace with numeric display and azotometer distillatory for efficient and consistent performance
    Infrared radiation heating enables thorough digestion in 40-90 minutes depending on sample type
    Measurement range 0.1–200 mgN (0.1%–99% nitrogen), recovery rate ≥99%, repetition relative standard deviation <±1%
    Distillation time 5–15 minutes, voltage AC 220V/50Hz, cooling water consumption: digestion 5L/min, distillation 3L/min
    Semi-automatic operation improves efficiency compared to manual methods, suitable for laboratories in food, agriculture, and environmental testing
     
    Model: PDN
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  • PTH-1B Acid & Alkali Neutralization Equipment | High-Efficiency Gas Removal with Built-in Air Pump
    Extraction Flow Rate: 18 L/min
    Air Extraction Interface: Φ8–10 mm, variable diameter joints available
    Neutralization Solution: 1L alkali and distilled water bottles, 10%–35% alkali concentration
    Power & Voltage: 120W, AC 220V/50Hz
    Features: Built-in negative pressure air pump, reliable three-stage absorption, safe and easy operation
    Maintenance: Convenient replacement of neutralization solution
     
    Model: PTH-1B
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  • PRSJ Waste Gas Collection Device | Industrial Acid Gas Collector with PTFE Sealing Cap & 316 Stainless Steel
    Collection Ports: 8, 10, 15, 20 depending on model
    Extract Openings: 1–2 depending on model
    Sealing Cap: 35g PTFE, resistant to high temperature, acids, and alkalis
    Shell Material: 316 stainless steel, corrosion-resistant and durable
    Installation: Lightweight, bottle cap design with gravity-based sealing
    Application: Efficient acid gas collection for industrial waste gas management
     
    Model: PRSJ
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  • PRSG-40 Series Automatic Tube Cleaning Machine for Laboratory Test Tubes
    Test Tube Processing Capacity: 40 pieces per cycle
    Cleaning Water Tank: External 50L bucket / Built-in 50L stainless steel tank
    Cleaning Water Temperature: Room temperature to 80°C (PRSG-40A)
    Automatic Cleaning Solution Addition: 0–30 ml/min
    High-Pressure Fan & Vertical Pipe Spray for Efficient Cleaning
    Operating Voltage: AC 220V/50–60Hz, Power: 1000W–4000W
    Overall Dimensions: 480×650×950 mm / 550×750×1100 mm
     
    Model: PRSG-40 Series
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  • PRX-20SX / PRX-20LX Graphite Digester with Automated Sample Digestion and Waste Gas Neutralization
    Number of Sample Holes: 20
    Aperture: Φ43.5 mm
    Heating Block Material: High-density graphite / 6061 aluminum alloy
    Set Temperature: 450–550°C, Temperature Control Accuracy: ±1°C, Heating Rate: 8–15°C/min
    Control System: 1–40 segment programmable heating / single point heating, Recipe Management: 9 groups
    Operating Voltage: AC 220V/50Hz, Heating Power: 2.8 kW
    Neutralization System: Extraction Flow 18 L/min, Reagent Bottle Capacity 1.7 L, Anti-fouling Tray with Alarm
     
    Model: PRX-20SX / PRX-20LX
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  • PRXJ-S Series Graphite Digester for Sample Digestion in AAS, ICP-MS, and Laboratory Analysis
    Number of Sample Holes: 36 or 54
    Aperture: Φ32×50 mm
    Heating Module Material: High-density graphite, Max Temperature: 350°C
    Temperature Control Accuracy: ±1°C, Heating Rate: 8–15°C/min
    Control System: 5.5-inch color touch screen, single point & segmented program heating (1–40 segments)
    Recipe Management: 9 groups, Scheduled Shutdown: 1–999 min
    Operating Voltage: AC 220V/50Hz, Heating Power: 3–4 kW
     
    Model: PRXJ-S Series
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  • ZDDN-9830Y Automatic Cation Exchange Capacity (CEC) Analyzer for Soil Testing with Touch Screen
    Analysis Range: 0.07–140 mmol/L
    Sample Weight: ≤5 g (solid)
    Distillation Time: 0–9990 s, freely adjustable
    Accuracy (RSD): ≤1%
    Sample Analysis Time: 5–10 min (cooling water 18℃)
    Test Tube Volume: 300–750 ml
    Operating Voltage: AC 220V/50Hz, Heating Power: 2000W, Dimensions: 500×460×710 mm, Net Weight: 26 kg
     
    Model: ZDDN-9830Y
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  • Laboratory Nitrogen Gas Generator PGN-1000 / PGN-2000, 99.99% Purity, 1–2 L/min Flow Rate, 220V
    Gas type: High-purity Nitrogen, 99.99%
    Output flow rate: 1000–2000 ml/min depending on model (PGN-1000 / PGN-2000)
    Working pressure: 0.4 MPa
    Voltage & frequency: 220V ±10%, 50Hz; Maximum power 170–350 W
    Noise level: <35 dB
    External dimensions (L×W×H): 520×260×360 mm – 620×350×600 mm
    Net weight: 24–32 kg
     
    Model: PNG-1000/2000
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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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