| Material Type | Loose Density Standard | Tapped Density Standard | | :--- | :--- | :--- | | | USP <616> Method I | USP <616> Method II | | Metallic Powders | ASTM B212 (Hall Flowmeter) | ASTM B527 | | Refractory Materials | ISO 8840 | ISO 787-11 | | Construction Aggregates | ASTM C29 / AASHTO T19 | Not typically required | | Chemical Powders | ISO 60 | ISO 3953 |
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