impur Posted July 12, 2006 Share Posted July 12, 2006 I'm needing a 7.0 and 10.0 calibration fluid. I calibrated my pH probe on my AC Jr. and also my Pinpoint monitor on sunday. I left the AC JR. probe out of water for a few days and now its reading .1 high. Quote Link to comment Share on other sites More sharing options...
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