High-Accuracy Digital pH Meter for Water Testing | Portable pH Tester with ATC & Data Logging Digital pH Meter Lutron PH-230SD is a compact and portable digital pH meter made for accurate acidity and alkalinity checks in liquids. This ph tester digital includes automatic temperature compensation, a clear display, and a strong probe for smooth everyday testing. Working as an effective water quality tester, it supports tasks such as water analysis, soil evaluation, and food processing. With regular calibration and care, this digital pH tester for water provides stable, precise, and dependable measurements across multiple applications. Applications: Suitable for water testing, pool maintenance, soil analysis, lab research, wastewater checks, cosmetic formulation, education, environmental monitoring, and food & beverage quality control.