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Table 5 Summary table for Uncertainty Budget for concentration determination in mg kg -1 by electro-gravimetry

From: Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods

Sources X ustd(x) ustd(x) / X Uc (mg/kg) UEx(mg kg-1);k=2
Precision (CMPb) 1000.813 mg/kg 0.069 mg/kg 0.000069 1.338 2.676
Atomic mass of PbO2 239.199 g 0.0577 g 0.000241
Balance (Mettler 220 g) 2.015 g 0.00005 g 0.000025
Balance (Sartorious 41 kg) 2012.734 g 0.1345 g 0.000067
Error in buoyancy 2014.745 g 2.0012 g 0.000993
weight of PbO2 (Mettler 220 g) 0.0584 g 0.00005 g 0.000856
Weight of solution taken for electro-gravimetry experiment (Mettler 220 g) 50.5618 g 0.00005 g 0.000001