Abstract: A multi-part kit system comprising a solid part A which comprises at least one acetyl donor, a liquid part B in the form of an aqueous composition which comprises 3 to 35 wt. % of hydrogen peroxide and one or more parts C, wherein the solid part A and/or the part(s) C comprise at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants, wherein the composition of the parts of the multi-part kit system is such, that directly after being mixed with each other and water in a specified ratio the pH of the mixture is in the range of 5.5 to 8.

Abstract: A process for eliminating bacterial spores on surfaces by contacting the surfaces with an aqueous composition comprising 3 to 30 wt. % of hydrogen peroxide and having a pH value of 6 to 8 for a period of 1 to 60 minutes at a temperature of 0 to 35° C., wherein the process does not comprise any germination step.

Abstract: A process for the preparation of an aqueous ready-to-use disinfectant composition comprising the following successive steps: 1) (a) providing an aqueous preparation A comprising at least one peracid; and (b) providing a preparation B comprising at least one organic compound capable of showing fluorescence on UV irradiation; and 2) mixing the preparations A and B and, optionally, water, wherein the composition of the preparations A and B and the mixing ratio used in step 2) is selected in such a manner that the resultant aqueous ready-to-use disinfectant composition comprises 0.005 to 5 wt. % of the at least one peracid, and 0.0001 to 3 wt. % of the at least one organic compound capable of showing fluorescence on UV irradiation.