Table 2.

The effect of NaF immersion.

	Disks previously stored in medium I		Disks previously stored in medium II		Disks previously stored in medium III
	wtF(%)	SD	wt F(%)	SD	wt F(%)	SD
FT	15.7	0.37	15.5	0.31	15.5	0.20
FII	7.8A,B.C	0.25	8.5A,B	0.36	8.25A,C	0.27
FVIII	12.1x,z	0.37	12.5y,z	0.37	10.5x,y,z	0.37
FIX	11.4X,Z	0.37	11.8Y,Z	0.37	10.5X,Y,Z	0.37
KN	8.2	0.69	8.2	0.52	8	0.70
HSF	2.5	0.44	2.67	0.52	2.75	0.72

The F concentrations (wt%); n = 2 disks; SD; same superscripts indicate average values with statistically significant differences (p < 0.001).