Chartered Manager for CEng and IEng members. Chartered Manager is the most prestigious status that can be achieved in the managerial profession. Awarded by the Chartered Management Institute (CMI) [new window], it is recognised throughout the public and private sectors and across all management disciplines.
DPH is an abbreviation for the chemical Diphenhydramine (dye-fen-hye'-dra-meen). It is the active ingredient in many over the counter sleep aids including Unisom, Nytol, Tylenol PM (combined with acetaminophen) and in many generic store brand remedies.
TPH is a mixture of chemicals, but they are all made mainly from hydrogen and carbon, called hydrocarbons. Scientists divide TPH into groups of petroleum hydrocarbons that act alike in soil or water. These groups are called petroleum hydrocarbon fractions.