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Great for water, wastewater, laboratory or plant use, these multiparameter testrs feature long-life pH electrodes with a wide range of sample compatibility. Pin-style conductivity sensors feature stainless steel electrodes for chemical resistance and durability. Replaceable sensor module saves you money by reusing the meter body. Advanced features include auto-shutoff, user-adjustable temperature coefficient, and low-battery indicator. The ultimate Tester for pH, conductivity, and temperature! combine measurement capabilities of multiple testers in one convenient pocket-sized unit. Up to 5 point pH calibration with NIST or USA autobuffer recognition. Conductivity, TDS, and salinity feature Autoranging based on the concentration of your sample. IP67 - rated housing Floats If accidentally dropped in water.