TECH Brief 9 – Nord_MoU H2SO4 Determination

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A top down Nordtest approach is used to estimate the measurement of uncertainty expressed as an expanded uncertainty for the molarity of sulphuric acid as determined by titration with standard sodium carbonate. The within-laboratory reproducibility represents the uncertainty due to the analytical process which is combined with the uncertainty of verification of traceability to give a combined uncertainty for the molarity of sulphuric acid.