Multi-Function PH Meter: A versatile tool for aquariums, hydroponics, and pools, offering PH, EC, TDS, salinity, S.G, ORP, and temperature measurements. Saltwater Pool & Aquarium Compatibility: Designed for saltwater pools and aquariums, this tester helps maintain ideal pH and salinity levels. Easy-to-Use Digital Interface: Digital display with a backlight for clear readings in any lighting, plus 3-point calibration for reliability. ATC & Auto-Off: Automatic Temperature Compensation (ATC) and auto-off features maintain accuracy and conserve battery life. High 0.01 Resolution: Achieve precise measurements with 0.01 resolution, ensuring accurate pH, EC, TDS, and salinity readings., Weight: 0.58863423954 pounds, Manufacturer: UieoKakeh