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So I know I’m a bit OCD but when it comes to a pH pen I think I need to seek a therapist because I am always worried if it’s in the right solution when storing it. Should it be in storage solution and then washed off with distilled water or ro water to knock all the crystals off to get a good reading or should it always be stored and 7.0 calibration fluid and then washed off with distilled or ro water then check solution I’m trying to read?