knives taped to a spoon
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OK so as the title states I wish to get the most accurate readings as possible from my meter. I ordered some Ph 7 solution- http://www.amazon.com/General-Hydroponics-7-0-Calibration-Solution/product-reviews/B001D0CKYK/ref=dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1 to be exact, and it says on the front of the container that it's rated to have a Ph of 7 at 25 degrees c. The F equivalent to that value is 77 degrees. It is currently 64 degrees F degrees where I live. Would a temperature difference of 13 degrees significantly alter its Ph?