Hanna HI-98129 TDS Tester ComboThe HANNA HI 98129 is a compact and waterproof combo tester that measures pH, conductivity (EC), total dissolved solids (TDS), and temperature in one easy to use device. Designed for low range EC and TDS measurements, it is ideal for hydroponics, environmental monitoring, agriculture, and water quality testing. Featuring a large dual level LCD, automatic calibration, replaceable pH electrode, and simple button operation, this tester offers high
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