Lowefx August 24, 2021 August 24, 2021 Over the last 4 weeks, I have calibrated this trident twice (two different calibration fluids that come in the reagent kits). Alkalinity is very close, magnesium is spot on, and Calcium is still 75 high. I'm cross referencing with Hanna and salifert checkers. Am I doing something wrong here??? Sent from my SM-N986U using Tapatalk
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