Explanatory notes
… of two or more separate constituents, some or all of which fall in this Section and are intended to be mixed together … classified under heading 28.44, even though they could also fall under some other heading of the Nomenclature. Thus, for … radioactive sodium chloride and radioactive glycerol fall in heading 28.44 and not in heading 25.01 or 29.05. …Legal note
… of two or more separate constituents, some or all of which fall in this Section and are intended to be mixed together …