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
 

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
 

COD Range: 0–600 mg/L (±5% F.S, 0.1 mg/L resolution)
TOC Range: 0–240 mg/L (±5% F.S, 0.1 mg/L resolution)
Turbidity Range: 0–300 NTU (±5% F.S, 0.1 NTU resolution)
Light Source: 254nm UV-LED with 365nm turbidity compensation
Interface: RS-485 MODBUS, 4–20mA output
Operating Conditions: 5–40℃, max depth 10m, IP68 protection
Installation: Flow cell or submersible mounting, 10m cable
 

Measurement Range: 0–250 mg/L, 0–1000 mg/L, 0–10000 mg/L (expandable by user)
Measurement Method: Potassium Dichromate Oxidation-Spectrophotometric Method (National Standard HJ/T399-2007)
Measurement Accuracy: ±3 mg/L (COD < 30 mg/L), ±10% (30–50 mg/L), ±5% (≥ 100 mg/L)
Automatic Sampling, Calibration, and Cleaning Functions
Reagent Consumption: 0.65–2.6 mL per test, supports 380 tests per 30 days with reagent kit
Display: 8-inch TFT color touch screen
Dimensions & Weight: 420 × 600 × 240 mm, 17.5 kg
Installation: Wall-mounted or cabinet-mounted
 

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
 

Testing items: COD, Ammonia Nitrogen, Total Phosphorus, Total Nitrogen
Detection range: COD 10-15000 mg/L; Ammonia 0.02-50 mg/L; Total Phosphorus 0.02-100 mg/L; Total Nitrogen 0.5-150 mg/L
Detection limit: COD 3 mg/L; Ammonia 0.005 mg/L; Total Phosphorus 0.005 mg/L; Total Nitrogen 0.2 mg/L
Measurement accuracy: ±5% or specified mg/L (varies per parameter)
Repeatability: ≤±3%
Display: 10-inch HD touchscreen with IoT remote viewing and DTU real-time data upload
Connectivity: Wi-Fi, Bluetooth printer support
 

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
 

Testing Parameters: 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)
Detection Accuracy & Repeatability: ≤±5% accuracy, ≤±3% repeatability
Sample Capacity: 8 samples simultaneous digestion (dual temperature control)
Operating Temperature Range: 0–50°C, IP65 waterproof
Data Storage & Output: Stores up to 10,000 test results, real-time printing, USB data transmission
Power Supply: Built-in Li-ion battery or DC 12V adapter, up to 2 full test cycles per charge
Display: 7-inch touch-screen interface with intuitive operation