This standard describes the butyrometric method according to Van Gulik for determining the fat content of cheese and processed cheese. The method is a routine method; it can be applied to cheese that is not older than six months. The method does not apply to whey cheese. See NEN 3759 for this
NEN 3758-1980 history
1980NEN 3758-1980 Cheese - Physical and chemical test methods - Determination of the fat content (routine method)