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1.1 ,This test method describes the apparatus and procedure needed for determining the minimum fluidization velocity of Geldart Group A powders and the minimum fluidization or complete fluidization velocity of Geldart Group B powders.
1.1.1 ,This test method is for powders that are readily or easily fluidizable and fall into the category of Group A and B of the “,Geldart”, classification. The fluidization of Geldart Group C powders will be addressed in another standard. This test method could apply to Geldart Group D particles but the focus of this document is towards Group and A and B materials.