BS EN ISO 16634-1:2008
食品.根据Dumas原理的燃烧测定总氮含量和计算粗蛋白含量.含有种子和牲畜饲料
Food products - Determination of the total nitrogen content by
combustion according to the Dumas principle and calculation of
the crude protein content - Part 1: Oilseeds and animal feeding
stuffs