Table 2.

Plate uniformity, signal variability, and Z factor.

	DPPH Reduction Method			ABTS Reduction Method
	Plate 1	Plate 2	Plate 3	Plate 1	Plate 2	Plate 3
Max signal (%RSD)	1.39	1.22	2.13	13.09	11.18	13.16
Medium signal (%RSD)	5.77	5.74	2.04	5.08	5.08	5.56
Low signal (%RSD)	12.7	6.60	4.56	3.34	4.64	5.43
% Reduction of medium signal	42.56	41.69	42.19	49.55	51.95	50.19
%RSD of % reduction	13.88	13.53	5.27	13.44	12.35	13.81
Z factor	0.94	0.97	0.97	0.93	0.91	0.89