pH/ORP Reference Solution

White Oak Environmental & Safety, LLC Verified independent store

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For use with TROLL 9500 Multiparameter Sondes, smarTROLL Multiparameter Handhelds, Aqua TROLL 400 Instruments. Replace your reference junctions when the sensor fails to calibrate w ith a reasonable slope and offset, even after replacing the filling solution. 60mL Bottle Show more