METHOD FOR QUALIFYING BOTTLE RINSER

A method for determining whether effective coverage of the interior of a bottle with a sprayed sanitizer in a bottle fill-and-cap operation is attained by using a fluorescing solution, preferably comprising riboflavin and sucrose dissolved in water, that is sprayed on the interior of the bottle by the same spray system by which the sanitizer is sprayed. After application of the fluorescing solution, UV light is applied to the bottle interior to activate the fluorescing solution and thus make evident the spray pattern. Spray pattern adjustments can be made as needed, in order to be certain that the entirety of the inside surface of the bottle is coated. Once the spray pattern is thus set, the equipment is qualified to be used for production, with the sanitizer being sprayed according to the same spray pattern.