pH By Ivan Suarez Robles 08 Feb, 2011 A measure of how acidic or basic a solution is. Water has a pH of 7 and is neutral. Solutions with a pH below 7 are acidic, while solutions with a pH above 7 are basic.Related Articles: Help4HD International 2016 SymposiumAboutHennepin County Medical Center of ExcellenceAbout HDSA Centers of ExcellenceDr. Rick Morimoto