Future Journal of Pharmaceutical Sciences

Table 7 Representation of overall statistical data %RSD for ruggedness

From: Quantitative determination of cyanoacetic acid content in teriflunomide drug substance by ion chromatography using conductivity detector

Variation		Standard area
Variation		1	2	3	4	5	6	Mean	SD	%RSD
Standard conditions		0.1593	0.1629	0.1629	0.1628	0.1631	0.1637	0.1625	0.0016	1.0
Flow rate (0.6 mL/min)	− 10%	0.1844	0.1846	0.1843	0.1843	0.1846	0.1849	0.1845	0.0002	0.1
Flow rate (0.6 mL/min)	10%	0.1502	0.1488	0.151	0.1501	0.1515	0.1524	0.1507	0.0013	0.8
Column oven temp (40 °C)	− 5	0.1661	0.1667	0.1664	0.1665	0.1671	0.1667	0.1666	0.0003	0.2
Column oven temp (40 °C)	5	0.1661	0.1657	0.1653	0.1657	0.1653	0.1652	0.1656	0.0003	0.2

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