This method is for determining the apparent bulk density (ABD) of loosely packed spherical catalyst particles with an average particle diameter of 1.6- to 3.2-mm ID. It is also applicable to extruded catalyst particles having the following dimensions: a maximum diameter of 3.2 mm and a maximum average length of 9.5 mm with a maximum individual length of 16 mm. Apparent bulk density is the mass per unit volume of the particulate material.
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