RT Journal Article SR Electronic A1 Balharová, Kateřina A1 Šustová, Květoslava T1 Activity and action screening of selected disinfectants JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis YR 2014 VO 54 IS 1 SP 157 OP 164 DO 10.11118/actaun200654010157 UL https://acta.mendelu.cz/artkey/acu-200601-0015.php AB This research work is aimed to monitoring of selected disinfectants'activity in operational conditions. Hereby there have been monitored two acidic disinfectants Despon K and Mikasan D, which have had-by their producer-stated different recommended concentration. These solutions were monitored in viewpoint of their activity at different temperature, time of circulation, pH and water hardness. In this work there were measured pH of solutions in unloaded medium to be compared with pH of solutions in loaded medium and this measuring was carried out regularly each week within a one month period. During this period there was also monitored total plate count (TPC), which was stated in the dairy, where samples were taken two-times monthly. It has been found, that the disinfectants Mikasan D and Mikal 94D are effective even by high water hardness.