Table 3.

Characteristic of the chromatographic columns tested

Column	Dimensions	Composition	Void volume (mL)	Void time (min)
Zorbax Eclipse Plus	100 × 2.1 mm, 1.8 µm particle size	C18	0.24	0.8
Zorbax Eclipse Plus	50 × 2.1 mm, 1.8 µm particle size	C18	0.12	0.4
Hypersil Gold	100 × 2.1 mm, 1.9 µm particle size	C18	0.24	0.8
Acquity HSS T3	150 × 2.1 mm, 1.8 µm particle size	C18	0.37	1.2
Cosmocore 2.6 PBr	100 × 2.1 mm, 2.6 µm particle size	Pentabromobenzyl	0.24	0.6
Hypersil Gold aQ	100 × 2.1 mm, 1.9 µm particle size	Polar endcapped C18	0.24	0.8