Historical Standard: UOP851-84 Density of Powders and Solids by Helium Displacement

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    1. Scope

    This method is for determining true density of powders and solids by displacement of helium gas. This method is written for use with a Quantachrome Null-Pycnometer, however, equivalent equipment is satisfactory. If pretreatment of the sample such as calcination or outgassing, is required, it must be carried out prior to analysis.

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