Abstract: The invention relates to a coating formulation with antimicrobial and antivirus properties. The biocidal effect is obtained by an unexpected synergistic action of silver ions together with isothiazolinone derivatives, which allows to reduce the content of biocides in the formulation or to have a more efficient and faster biocide performance. The same formulation also includes a fluorescent component, added to determine the homogeneous distribution of the coating on the treated substrate. One embodiment of the invention is about a coating formulation applicable by spraying and it contains solvent or co-solvent and propellant.

Abstract: The invention relates to a radiation source including: an illuminant; a first optical element; and a sensor. The sensor is designed appropriately and is connected to the first optical element appropriately such that the sensor can be used to determine a change of a parameter of the first optical element over time, whereby the parameter affects an optical property of the radiation source. Moreover, the invention relates to a method for the producing a product involving the provision of a radiation source according to the invention as well as to a use of the radiation source to increase the efficiency of conversions or changes of state of educts to products.