Comparative characteristics of methods bacteriological study of water survey data from some superficial reservoirs of Kazan

Comparative assessment of standard methods of bacteriological research of water was carried out by many authors: ND Rutshtein (1952), LE Korsh (1953), MG Kichenko (1955), ND Kurochkin (1955) and others. All of them in their works point to the greater sensitivity of the two-phase fermentation method in comparison with the method of membrane filters, note its simplicity and clarity. The reliability of the determination of the degree of fecal contamination obtained by the method of membrane filters, according to the data of L. E. Korsh (1953), largely depends on the quality of membrane filters and on the physical properties of water. When working with filters that the author assesses as benign, similar results were obtained by both methods.