The EPA has established regulations which classify four groups of disinfection byproducts including Trihalomethanes, Haloacetic acids, Haloacetonitriles and Ethylene dibromide in association with Dibromochloropropane. The EPA requires public water systems limit these byproducts to specific levels....

The book explains rules and concepts of the quality. It also explains how to apply all the quality requirements so as to facilitate obtaining ISO certificates. The book shows different specific definitions to facilitate understanding the quality manual. It also shows names, types and requirements of the different ISO certificates....

The book represents hand book to provide people with limited scientific knowledge with notes about concepts of gamma irradiation by mean of radiotherapy. It also provide them with simple informations about different types of radioprotectors which obtained from the nature....

The current study added complete idea about the different disinfecting agents and the different reasons related to increasing the disinfection by-products (DBPs)and the total organic halogen. It also evaluated ratio of the individual by-products to the total organic halogen....

The book shows principles and applications of the most distributed technique used for water analysis. The central laboratory of Greater Cairo Drinking Water Company (GCWC) uses this important technique and applies the analytical methods recorded in the standard methods for water and wastewater examination....