Disinfectants quantitative suspension

EN 1276 1997, Chemical Disinfectant and Antiseptics-Quantitative Suspension Test for Evaluation of Bactericidal Activity of Chemical Disinfectants and Antiseptics Used in Food, Industrial, Domestic, and Institutional Areas-Test Methods and Requirements, Comite European de Normalization, La Plaine Saint-Denis Cedex France, 1997. 

EN 1276. Chemical disinfectants and antiseptics - Quantitative suspension test for the evaluation of bactericidal activity of chemical disinfectants and antiseptics used in food, industrial, domestic, and institutional areas - Test method and requirements (phase 2/stepl). Brussels European Committee for Standardization. 

Stainless steel disks are contaminated with a bacterial test suspension and dried. The disinfectant is applied on the dried film on the disk and kept at a specified temperature for a defined time. The disk is than transferred to a previously validated neutralization medium to stop the action of the disinfectant. The cfii of surviving bacteria recovered from the surface is determined quantitatively. 

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