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.
What are Total Petroleum Hydrocarbons (TPH)? Total petroleum hydrocarbons (TPH) is a term used to describe a large family of several hundred chemical compounds that originally come from crude oil. Crude oil is used to make petroleum products, which can contaminate the environment.