pH and Chlorine values for good water quality. pH. The pH is a measure of the acidity of the water. The pH scale goes from 0 to 14, where pH 7 is neutral. If the pH is above 7, the water is basic; if it is below 7 the water is acid. The optimum pH for pool water is 7.4, since this is the same as the pH in human eyes and mucous membranes. A pH of 7.4 also gives good chlorine disinfection.
Q: apple id format for using find my iphone. How do i use my existing apple id for setting up the Find My Iphone? the set up screen says to input the apple id as xxx@example.com, ie in an email address format, whereas my apple id is not in the xxx@yyy.zzz format. it is only xxx.
1 This is where Apple will send your Apple ID information.  In prior email boxes, enter as many of your old emails as you can think of. Apple will check to see whether these are your Apple ID. If none of these were ever used for an Apple ID, you'll have to remember the answers to your security questions instead.