ISO 9161:2019

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ISO 9161:2019 is an international standard from the International Organization for Standardization (ISO) that specifies a method for determining the apparent and tap densities of uranium dioxide (UO2) powder. This powder is used in the production of nuclear fuel pellets. The standard provides a way to measure how much a powder compacts when poured or tapped, which is important for ensuring the quality of the fuel pellets.