Wipe the stoma and its surrounding skin with warm water and dry, remove the sclerotic keratinised skin and stain, keep the skin around the stoma clean and dry.
Measure the size of the stoma with the measuring card supplied. Do not touch the stoma with your fingers while measuring it.
Peel the protective release paper on the inside ring of the flange and stick aiming at the stoma(It is good to blow air into the bag before sticking, in order to prevent thin films from sticking to each other),