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
 

pH Measurement Range: 0.00 to 14.00 pH, Accuracy ±0.02 pH
ORP (Oxidation-Reduction Potential) Range: -1999 to 1999 mV, Accuracy ±0.1% F.S
Temperature Range: 0.0 to 80.0 ℃ (32.0 to 176.0 ℉), Accuracy ±0.5 ℃
Resolution: pH 0.01, ORP 1 mV, Temperature 0.1 ℃/℉
Power Supply: Dry Battery (7×3)
Compact and portable design: 165×75×51mm, Weight: 270g (without battery)
Features: Automatic compensation, one-key calibration, fast response, backlight display
 

Measurement parameters: pH, ORP, DO, conductivity, TDS, salinity, resistivity, temperature
pH range: 0–14 pH, 0–80°C; 1–3 point automatic calibration (buffers included)
DO range: 0–20.00 mg/L, with rapid 5 min electrode polarization
Conductivity range: 0–200 mS/cm with platinum black sensor, auto temp. compensation
ORP range: -1999 to 1999 mV with platinum ring sensor
Data storage: 400 sets, IP57 water-resistant housing, rugged carrying case included
 

Measuring range: pH 0.00–14.00, mV 0–±1400 mV
Resolution: 0.01 pH, 1 mV, 0.1°C; Accuracy: ±0.1 pH, ±1% FS (mV)
Temperature compensation range: 0–60°C
Display: Blue backlight, dual-row LCD shows pH, mV, and temperature simultaneously
Features: ORP and ion-selective electrode measurement, high input impedance, stable readings
Dimensions: 220×160×65 mm, Weight: 0.3 kg
Power supply: DC 6V, suitable for laboratory and field use