EVALUATION OF DRINKING WATER QUALITY IN SOME URBAN AREAS IN NORTH SINAI, EGYPT

Abstract

… The presumptive test aimed to detect the Gram negative coliform bacteria in the water samples. For this task, 120 series of test tubes containing 10 ml of lactose fermentation broth were needed for each sample. DW samples (10, 1 and 0.1 ml) were added sequentially in 5 test …