A method for determining cleanability of a surface of an article, comprising the steps of: providing an article having a surface to be cleaned; providing a solution comprising an ATP component, in a diluted amount, measurable in relative light units, RLUs, using an adenosine triphosphate, ATP, bioluminescence meter; applying the solution to the surface of the article; obtaining , using an ATP bioluminescence meter configured to measure relative RLUs, a reference light measurement of the surface; subjecting the surface of the article having the solution applied thereto to a cleaning process; obtaining , using the ATP bioluminescence meter, a light measurement of the cleaned surface; and quantifying , based on a measurement difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface, cleanability of the surface of the article; characterized in that each of the obtained reference light measurement and the quantified measurement difference between the reference light measurement and the light measurement of the cleaned surface are expressed as a percentage, and wherein the obtained reference light measurement corresponds to a 100% sullied surface, a 100% difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface corresponds to a completely unsullied surface, and less than a 100% difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface corresponds to a partially sullied surface; and in that the surface of the article comprises a barrier coating providing protection against at least one of fluids, disinfectants, chemicals and ultra violet light. providing an article having a surface to be cleaned; providing a solution comprising an ATP component, in a diluted amount, measurable in relative light units, RLUs, using an adenosine triphosphate, ATP, bioluminescence meter; applying the solution to the surface of the article; obtaining , using an ATP bioluminescence meter configured to measure relative RLUs, a reference light measurement of the surface; subjecting the surface of the article having the solution applied thereto to a cleaning process; obtaining , using the ATP bioluminescence meter, a light measurement of the cleaned surface; and quantifying , based on a measurement difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface, cleanability of the surface of the article; characterized in that each of the obtained reference light measurement and the quantified measurement difference between the reference light measurement and the light measurement of the cleaned surface are expressed as a percentage, and wherein the obtained reference light measurement corresponds to a 100% sullied surface, a 100% difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface corresponds to a completely unsullied surface, and less than a 100% difference between the obtained reference light measurement and the obtained light measurement of the cleaned surface corresponds to a partially sullied surface; and in that the surface of the article comprises a barrier coating providing protection against at least one of fluids, disinfectants, chemicals and ultra violet light. <EOS>