Table 2.

Robustness.

Conditions		%RSD 1
pH of mobile phase	2.7	0.887
	3.0	0.347
	3.3	2.757
Composition of mobile phase	98:2	0.501
	97:3	0.347
	96:4	0.281
Flow	1.8 mL·min−1	0.216
	2.0 mL·min−1	0.347
	2.2 mL·min−1	0.244
Column	C18 Kromasil®, 4.6 × 250 mm, 5 µm	0.089
	C18 XTerra®, 4.6 × 250 mm, 5 µm	0.347
	C18 Lichrospher®, 4.6 × 250 mm, 5 µm	4.404
Wavelength	198 nm	1.502
	200 nm	0.347
	202 nm	0.588

¹ Relative Standard Deviation.