Determination of Glycerin from a Marketed Personal Care Product Using Gas Chromatography

Table 4

Robustness of the developed analytical procedure^**.

Assay; (mL/100 mL)	Assay	Analysts			Instruments		Storage condition			Chromatographic condition
		1	2	3	I	II	20°C	30°C	45°C	Column temperature (±5°C)	Detector temperature; (±5°C)	Carrier gas flowrate^#
	9.62	9.61	9.63	9.66	9.60	9.62	9.63	9.62	9.59	9.66	9.63	9.61

Each analysis was carried out in three replicates.
A 5% change in the carrier gas flowrate results in no appreciable change in the retention time of the analyte ().