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Coulometric method with titratable impurity analysis and mass balance method: convert acidimetric purity to chemical purity for SI-traceable highest standard of qNMR (potassium hydrogen phthalate), and verified by qNMR

Crossref DOI link: https://doi.org/10.1007/s00216-023-04532-x

Published Online: 2023-01-26

Published Print: 2023-03

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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