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
 

Test Method: DPD photoelectric colorimetric determination
Parameters: Ozone, Chlorine, Total Chlorine, Carbon Dioxide
Measuring Range: 0–5 mg/L (Ozone 0–2 mg/L)
Minimum Indication: 0.01 mg/L; Linearity Error: ±5% F.S; Repeatability: 3%
Features: Dual optical path system, automatic light source selection, desktop microcomputer configuration
Power Supply: DC 9V / 0.1A
Optional: Built-in printer, rapid assay reagents for long-term stable supply
 

Measurement Range: 0–1000 NTU (Turbidity), 0–1000 mg/L (Suspended Solids)
Resolution: 0.01 / 0.1 / 1.0 NTU or mg/L
Measurement Accuracy: ≤ ±0.1 NTU (≤ 1 NTU), ≤ ±5% (> 4 NTU)
Repeatability: ≤ ±0.1 NTU (< 10 NTU), ≤ ±1% (> 10 NTU)
Operating Temperature: 5–40°C
Protection Rating: IP65 Waterproof and Dustproof
Weight / Dimensions: 290g, 170 × 72 × 44 mm
 

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