Simultaneously detects 12 water quality parameters including residual chlorine (0-3 mg/L), pH (6.5-9.0), dissolved oxygen (0-20 mg/L), ammonia nitrogen (0-5 mg/L), phosphate (0-2 mg/L), copper (0-2 mg/L), and hexavalent chromium (0-2 mg/L).
Uses advanced German optical structure with imported high-brightness quasi-parallel LED cold light source for precise and stable measurement.
Supports multi-wavelength detection at 420nm, 470nm, 520nm, and 620nm for diverse parameter analysis.
Waterproof design (IP65), built-in 2500mAh rechargeable lithium battery, and storage of up to 5000 test results.
Compact size: 170×72×44mm, lightweight at 277g, portable with user-friendly OLED display and 5-key operation.
 

Measures multiple parameters including residual chlorine (0-3 mg/L), total chlorine (0-3 mg/L), chlorine dioxide (0-5 mg/L), ozone (0-2.5 mg/L), pH (6.5-9.0), urea, alkalinity, hardness, cyanuric acid, and chloride
OLED display with 5-key operation and acrylic protective panel
High-brightness quasi-parallel LED cold light source with 100,000 hours lifespan
IP65 waterproof design with sealed plastic casing resistant to acid, alkali, and oxidation
Supports up to 5000 data records storage, manual data saving, and PC connectivity (M900)
Dimensions: 170×72×44 mm; Weight: 277 g
Built-in 2500mAh rechargeable lithium battery with USB charging
 

Temperature range: 40–180°C with ±0.1°C precision
Four temperature zones with independent control
Can process up to 32 samples simultaneously
Rapid heating: 25°C to 165°C in 9 minutes
7-inch color touch screen with real-time temperature display
Safety shield protects test tubes during digestion
Power supply: 220VAC, 1250W; Dimensions: 370×375×190mm; Weight: 5.5kg
 

Measuring Range: 0.1–10.0 mg/L
Principle: Nano reagent photometric method
Wavelength: 420 nm LED light source
Accuracy: <1.0 mg/L: ≤±0.05 mg/L; ≥1.0 mg/L: ≤±5%
Operating Environment: 0–40°C, RH ≤90% (non-condensing)
Power Supply: Battery-powered, >24 h continuous use
Dimensions & Weight: 128×70×48 mm, 188 g
 

Design: Portable aluminum alloy structure with 4.3-inch high-resolution color LCD touch screen
Detection Range: 0.10–5.00 mg/L; Transmittance: 0.00–100.00% (Resolution 0.01%, Accuracy ±2.0%)
Absorbance Resolution: 0.001; Transmittance Repeatability ≤0.2%; Stability ≤0.3% (3 minutes)
Functions: Intelligent input, automatic result saving, report printing, multi-curve calibration
Communication: RS232, USB with online data transfer and monitoring network function
Power Supply: AC 220V or rechargeable lithium battery
 

Supports detection of 20 water quality parameters including residual chlorine, total chlorine, ozone, pH, dissolved oxygen, ammonia nitrogen, phosphate, nitrate, hexavalent chromium, copper, etc.
Uses imported German high-brightness quasi-parallel LED cold light source and advanced optical design for high accuracy and stability
OLED high-definition display, easy operation with 5-button control, stores up to 5000 test results
IP65 protection rating, full plastic casing with anti-oxidation, acid and alkali resistance, and waterproof sealed design
Multi-wavelength detection at 420nm, 470nm, 520nm, and 620nm for versatile water quality analysis
Built-in 2500mAh lithium battery, supports charging via data cable and computer connectivity
Dimensions: 170×72×44mm; Weight: 277g; portable and lightweight design
 

Measures residual chlorine, total chlorine, chlorine dioxide, ozone, and pH
Detection range: residual chlorine 0-3 mg/L, total chlorine 0-5 mg/L, ozone 0-12 mg/L, chlorine dioxide 0-2.5 mg/L, pH 6.5-9.0
High-brightness quasi-parallel LED cold light source with German optical design
OLED display with user-friendly interface and manual data saving (up to 5000 results)
IP65 waterproof rating with durable, anti-corrosion plastic casing
Built-in 2500mAh rechargeable lithium battery, supports USB charging and PC connection
Absorbance range 0-3.0Abs, optical stability ≤±0.005Abs/30min
 

Detection Parameters: Residual Chlorine (0-3 mg/L), Urea (0-20 mg/L), pH (6.5-9.0)
Multi-wavelength Support: 420nm, 470nm, 520nm, 620nm for versatile parameter detection
Optical Performance: German advanced optical structure with quasi-parallel LED cold light source
Display & Storage: Clear OLED screen, manual save, stores up to 5000 test results
Durability: IP65 waterproof rating, plastic casing with anti-oxidation and acid-alkali resistance
Power: Built-in 2500mAh lithium battery, rechargeable via data cable
Size & Weight: 170×72×44mm, 277g — lightweight and portable for field use
 

Display digits: 0~999 
Counting signal: Buzzer/ Voice report number (Depend on models)
Diameter of culture dish (mm): 100
Upper light source power (W): LED2 for model PLN-50S
Lower light source power (W): 16
 

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