I just pulled out my little pH test kit manual - put out by the same company who makes the strips I buy, but the author has some great information.
For whatever it's worth:
By Deborah Page Johnson:
"Testing the second urine of the day, before you eat, should give a reading of 6.8 to 7.2 Ideally the first voiding eliminated all of the stored toxins and acid from the day before. If mineral reserves are adequate, your reading should be back in balance. However, if this does not occur, your next chance to balance body systems is with an alkalizing breakfast."
(feelgoodfood.com is her site, or so stated in the book)