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ISO 8220:1986
Aluminium oxide primarily used for the production of aluminium -- Determination of the fine particle size distribution (less than 60 mu/m) -- Method using electroformed sieves
The particles in the range of 63 to 16 m are quantitatively separated by sieving in an aqueous solution of a dispersing agent. The sieves are square-aperture or round-aperture electroformed sieves, depending on their origin. Each sieved fraction is dried and weighed.
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International Organization for Standardization [iso]
