Explanatory notes
… 50 % of the elements Mg, Ca or Cr, or expressed as MgO, CaO or Cr 2 O 3 6902.20 - Containing by weight more than … for the purposes of this subheading is the content of MgO, CaO or Cr 2 O 3 . This is normally done by determining the … be calculated. For example, 40 % Ca is equivalent to 56 % CaO and 24 % Mg is equivalent to 40 % MgO. Thus, a product …
