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ISO 17034 describes competence and consistent operation requirements for reference material producers, reinforcing the broader point that documented identity, value assignment, and traceability matter in analytical-material workflows [15]
Mixing mcg into a calculation that expects mg shifts the answer by 1000x a documented cause of users either taking a microscopic dose or a fatal-equivalent dose depending on which direction the unit error went
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Skorjanec et al., 2009
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