3-in-1 PH/TDS/Temperature Digital Pen Water Quality Tester
High-precision sensor for instant PH, TDS, and temperature readings with ±0.01 accuracy. Durable waterproof IP67 design with reinforced ABS casing for harsh environments like labs, pools, or hydroponics. Auto-calibration function and replaceable electrodes ensure long-term reliability for aquaculture, drinking water, or industrial use. Compact pen-style build with backlit LCD for effortless on-site testing, ideal for growers, brewers, and researchers. Powered by 2x LR44 batteries (included), featuring auto-off to conserve energy during fieldwork or continuous monitoring. Exclusive bulk pricing for wholesale buyers – factory-direct quality without retail markup.