Measurement Range: 0~1000 NTU (three selectable ranges: 0-20, 0-200, 0-1000 NTU)
Resolution: 0.01 / 0.1 / 1.0 NTU
Accuracy: ≤±0.1 NTU for <1 NTU/hour drift; ≤±0.2 NTU for 1-4 NTU/hour drift; ≤±5% for >4 NTU/hour drift
Repeatability: ≤±0.1 NTU (<10 NTU/hour), ≤±1% (≥10 NTU/hour)
Zero Drift: ≤±0.3% FS/30 minutes
Operating Temperature: 5~40°C
Protection Level: IP65, Lithium or Dry Battery Power Supply
 

pH Measurement Range: 0.00–14.00 pH, Resolution: 0.01 pH, Accuracy: ±0.02 pH
Temperature Measurement Range: 0.0°C–100.0°C, Resolution: 0.1°C, Accuracy: ±0.5°C
Automatic 3-point standard buffer calibration with auto recognition
IP65 waterproof rating with boat-shaped float design, supports 1ml micro-sample measurement
Multi-line backlit LCD display with auto backlight and auto shut-off functions
Powered by 1 x 1.5V AAA battery, replaceable electrode
Dimensions: 180 × 40 × 45 mm; Weight: 95 g
 

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 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
 

TDS measurement range: 0–9999 ppm, Conductivity range: 0–9999 μS/cm
Temperature measurement range: 0–80℃ (32–176℉) with automatic temperature compensation
Measurement accuracy: ±2% Full Scale (F.S.)
Probe material: Pure titanium probe, corrosion-resistant; stainless steel temperature sensor
Display: Large, clear screen with value lock and low battery indicators
Power supply: 2 x 1.5V AG13 button cells, low power consumption with auto shutdown after 2 minutes idle
Product size/weight: 164×25×16 mm, 26.5 g
 

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
 

Testing parameters: COD, Ammonia Nitrogen, Total Phosphorus, Total Nitrogen
Measurement range: COD 10-15000 mg/L, Ammonia Nitrogen 0.02-100 mg/L, Total Phosphorus 0.02-20 mg/L, Total Nitrogen 0.5-500 mg/L
Accuracy: ±5% for all parameters
Repeatability: ≤±3%
Digestion temperature: COD 165℃ for 20 min, Total Phosphorus 150℃ for 15 min, Total Nitrogen 125℃ for 30 min
Optical system: Imported high-brightness quasi-parallel LED cold light source with German optical design
Data storage: Up to 3000 test results, real-time data transmission and computer analysis support
 

Measurement Range: 0-20 mg/L dissolved oxygen or 0-200% saturation
Accuracy: ±1% with resolution of 0.01 mg/L
Response Time: 10 seconds
Sensor Protection: IP68 waterproof sensor, IP67 instrument
Data Storage: Supports up to 50,000 measurements
Power Supply: USB charging & 4 x AA batteries
Display: 3.3-inch monochrome LCD with backlight
 

Conductivity measuring range: 0~400.0 mS/cm with automatic range switching
TDS range: 0.0 ppm~200.0 ppt, accuracy ±0.5% F.S
Temperature range: -10.0℃~110.0℃, accuracy ±0.2℃
Salinity range: 0.0~260.0 g/L, accuracy ±0.5% F.S
IP65 waterproof rating, large backlit LCD display
Data storage capacity: 256 sets of measurements
Powered by 2 AAA batteries, battery life over 500 hours
 

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