Table 1

Interpretation of chromatograms obtained by in-house and European Pharmacopoeia methods: similarity factors, relative retention (RR), mean area (%)

	Similarity factor*	RR†	Mean area†
In-house method
Peak 1	0.796	0.17	0.20
Peak 2	0.998	0.59	0.26
Peak 3	0.998	0.74	0.86
Nystatin		1.00	95.5
Peak 4	0.999	1.14	0.28
Peak 5	0.993	1.36	0.27
Peak 6	0.999	1.60	0.90
Peak 7	0.997	1.73	0.42
Peak 8	0.928	2.04	0.40
Peak 9	0.884	2.61	0.86
European pharmacopoeia method
Peak 1	0.994	0.50	0.59
Peak 2	0.999	0.83	0.92
Nystatin		1.00	94.2
Peak 3	0.999	1.13	0.32
Peak 4	0.999	1.31	1.43
Peak 5	0.993	1.58	0.34
Peak 6	0.915	1.67	0.46
Peak 7	0.994	1.80	0.76
Peak 8	0.815	1.96	0.97
Peak 9	0.485	2.00	0.62