Water Quality Tester Digital Water Quality Tester Portable Orp Tester Pen Water Quality Analyzer for Alcohol Pools Aquarium Water Quality Tester

Specifications: RANGE: -1999MV ~ 1999MV Resolution: 1mV Accuracy: +5mV Operating Temperature: 0°C ~ 50°C (32°F ~ 122°F) Battery: 2 × 3V (CR1632) Button Cell Battery (Not Included) Material: ABS Item Size: 14.8 * 2.6 * 1.4cm / 5.8 * 1.0 * 0.6in Item Weight: 37.4g / 1.3oz Use to measure the amount of oxidation reduction potential (ORP) level. The trend of the solution to gain or lose electrons. Clear LCD with backlight. Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems. Mini small size, easy to carry with.