| Type : NumericType | 
| Definition | 
| A measure of how acidic or alkaline a solution is. The ph scale goes from 0 to 14, where 7.0 is neutral. A pH of 0 to 7 is acidic, and 7 to 14 is alkaline. It requires no unit of measure as it refers to measurement scheme generally recognized within the fields of physics and material science. (Defined in file Fields.xsd , or a file it imports) | 
| Parents | 
| \AcknowledgeScreeningReport\DataArea\ScreeningReport\ScreeningPackageResult\ScreeningResult\DrugScreeningReport\LaboratoryReport\LaboratoryOverallResult\SpecimenAnalysis |