Measurement Range: 0.05–10.00 mg/L total residual chlorine
Accuracy: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
Wavelength: 520 nm, LED light source
Operation: Intuitive display, simple operation, fast analysis with low reagent use
Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
Battery Life: Over 24 hours continuous use
Principle: DPD spectrophotometric method, compliant with HJ586-2010 standard
 

Test Method: Photoelectric colorimetric detection principle
Models: P9022 (2 parameters), P9025 (5 parameters), P9029 (9 parameters)
Parameters: Residual Chlorine, Total Chlorine, Combined Residual Chlorine, Chlorine Dioxide, Nitrite, Dissolved Oxygen, Ammonia Nitrogen, Iron
Measuring Range: 0–12 mg/L (depending on parameter); Minimum Indication: 0.001 mg/L
Accuracy: Linearity Error ±5% FS; Repeatability 2%
Features: Microcomputer with touch keyboard, backlight LCD display, multi-point curve calibration
Power Supply: AC 220V / 50Hz / 5W
 

Measurement Range: 0.00–10.00 mg/L residual chlorine
Accuracy: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
Wavelength: 520 nm, LED light source
Operation: Simple, intuitive display; fast analysis with low reagent use
Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
Battery Life: Over 24 hours continuous use
Principle: DPD spectrophotometric method
 

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)
 

Measurement Range: 0.1–5.00 mg/L chlorine dioxide
Accuracy: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
Wavelength: 520 nm, LED light source
Operation: Intuitive display, simple operation, fast analysis with low reagent use
Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
Battery Life: Over 24 hours continuous use
Principle: DPD photometric method, chlorine dioxide reacts with DPD to produce a red-colored solution
 

Measurement Range: 0.05–3.00 mg/L residual chlorine
Precision: ≤ ±0.05 mg/L (<1 mg/L), ≤ ±5% (≥1 mg/L)
Wavelength: 520 nm, LED light source
Operation: Intuitive display, simple operation, fast analysis with low reagent use
Portability: Compact (128×70×48 mm), lightweight (188 g), IP65 protection
Battery Life: Over 24 hours continuous use
Principle: DPD spectrophotometric method
 

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
 

Function: Portable colorimetric chlorine analyzer for measuring available chlorine in water using photoelectric colorimetry
Measuring Range & Accuracy: 0–30 mg/L, minimum indication 0.01 mg/L, linear error ±5% FS
Display & Operation: Microcomputer touch keyboard, direct reading concentration value, automatic zeroing and calibration, average calculation, timer reminder
Power & Portability: Battery-powered (9V carbon or alkaline), low power consumption, automatic shutdown after 10 minutes of inactivity, lightweight 170g
Storage & Connectivity: Automatic data storage with power-off protection, optional USB or RS232 data output, optional AC/DC power adapter
Measuring Cell & Conditions: Φ25 mm colorimetric bottle, automatic wavelength selection, operating temperature 0–50°C, relative humidity 0–90%, dimensions 162×60×33 mm
 

Function: Portable high-range colorimetric chlorine analyzer for measuring available chlorine in water using photoelectric colorimetry
Measuring Range & Accuracy: 0–250 mg/L, minimum indication 0.1 mg/L, linear error ±5% FS
Display & Operation: Microcomputer touch keyboard, direct reading concentration value, automatic zeroing and calibration, average calculation, timer reminder, slope calibration
Power & Portability: Battery-powered (9V carbon or alkaline), low power consumption, automatic shutdown after 10 minutes of inactivity, lightweight 170g
Storage & Connectivity: Automatic data storage with power-off protection, optional USB or RS232 data output, optional AC/DC power adapter
Measuring Cell & Conditions: Φ25 mm colorimetric bottle, automatic wavelength selection, operating temperature 0–50°C, relative humidity 0–90%, dimensions 162×60×33 mm
 

Function: Portable multi-parameter water quality meter using DPD photometric method with photoelectric colorimetry
Measurement Parameters: Residual chlorine, total chlorine, combined residual chlorine, carbon dioxide, ozone
Measuring Range & Accuracy: 0–5 mg/L, 0–10 mg/L, 0–2 mg/L; minimum indication 0.01 mg/L; linear error ±5% FS; repeatability 3%
Display & Operation: Microcomputer touch buttons, LCD backlit display, auto-zero and calibration, stable and maintenance-free performance
Power Supply: 6F22 9V battery, with low voltage prompt and auto shutdown after 10 minutes
Portability: Compact design with portable case, fast warm-up (30 seconds), equipped with rapid determination reagents