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.
I found http://support.apple.com/kb/HT4627 which states:  Removing an associated device or computer from an Apple ID. To remove a device or computer from your Apple ID: 1  Open iTunes. 2  From the Account Information screen, click Manage Devices.3  Click the Remove button next to the device name you would like to unassociate. .Removing an associated device or computer from an Apple ID. To remove a device or computer from your Apple ID: 1  Open iTunes. 2  From the Account Information screen, click Manage Devices.