The present application is directed to water and surfactant-containing liquid washing or cleaning agents containing a hydrophobic precursor compound in microemulsified form, from which a peroxycarboxylic acid or the salt thereof can be released by UV radiation. Methods for washing textiles and cleaning hard surfaces using such precursor compounds are also included.

A method of laundering fabric, where the method includes the steps of: (a) in a main washing step, washing soiled fabric with an aqueous wash bath including detersive surfactant and one or more of the following components: perfume, brighteners, hueing dyes, enzymes, or any combination thereof; and (b) in a rinsing step, rinsing the soiled fabric with an aqueous rinsing solution including photo-bleach;
where an artificial light source is present and turned on during at least part of the rinsing step (b) and provides light to the aqueous rinsing solution in such a manner that activates the photo-bleach present in the aqueous rinsing solution, and where the artificial light source is turned off during at least part of the main washing step (a) and does not provide any light to the aqueous wash bath.

A parts-washing method is described. The method comprises: (a) contacting a part with an aqueous liquid cleaning composition in a contact zone at a temperature of less than 45 degrees C., wherein the aqueous liquid cleaning composition comprises at least one alkoxylate surfactant; (b) passing at least part of the aqueous liquid cleaning composition from the contact zone to a separation housing; (c) separating the aqueous liquid cleaning composition in the separation housing to form an upper oily phase, an intermediate aqueous phase and a lower particulate phase; and (d) withdrawing at least a portion of the intermediate aqueous phase for use as the aqueous liquid cleaning composition in the contact zone.

This disclosure describes a composition which can provide real-time feedback during medical device cleaning or reprocessing. The composition can be used to monitor the amount of biological material cleaned from medical devices and to determine when cleaning is complete. The disclosure also relates to a method of cleaning, or assessing the cleanliness of, a medical device such as an endoscope. Cleanliness can be assessed by contacting the medical device with the composition, shining an excitation light on the composition, and measuring intensity of resulting fluorescence over time.

A method for cleaning a vacuum chamber, particularly a vacuum chamber used in the manufacture of OLED devices is described. The method includes cleaning at least one of an inside of the vacuum chamber and a component inside the vacuum chamber with active species, a process gas for generating the active species includes at least 90% oxygen and 5 at least 2% argon, particularly, wherein the process gas includes about 95% oxygen and about 5% argon.

An effervescent cleaning composition in the form of a tablet for the cleaning of oral appliances in an ultrasonic cleaning device, wherein the tablet has a first face and a second face, the first face and second face opposing one another in a depth direction of the tablet, wherein the first face is provided with a depression, wherein the depression provides the tablet with a minimum dimension in the depth direction that is 50 to 90% of the maximum dimension of the tablet in the depth direction and wherein the maximum dimension of the depression in a direction which is perpendicular to the depth direction is 40 to 70% of the dimension of the tablet in the same direction, being perpendicular to the depth direction. The tablet is adapted to dissolve in water and, as it dissolves, an aperture is formed in the tablet in the depth direction at the site of the depression.