VISOCOLOR® alpha uses colourimetric, as well as titrimetric procedures. Use of multicomponent reagents results in a very convenient, rapid and safe handling because often only one reagent is needed for each test. The reagent bottles are packed in practical blister packs. The cardboard back is slidden for opening and closing the package, and also provides all information required for the test: instructions for use in 6 languages with pictographs, as well as a colour comparison scale for colourimetric evaluations. The blister packs of the VISOCOLOR® alpha test kits have a punched hole for convenient storage or display.