Table 1.

Investigation of the effect of pre-conditioning agent on the elution of [¹⁸F]fluoride from Waters QMA-lite cartridges.

Entry	Preconditioning Agent	Fluoride recovery (%)
		0.005 M KOH	0.0075 M KOH	0.01 M KOH	0.02 M KOH
1	NH4HCO3		15		77
2	NEt4HCO3		7		75
3	NaHCO3	21	34	75	84
4	Na2CO3		82		92
5	K2CO3		78		94
6	Na2SO4	62	78	78	89
7	K2HPO4		68		94
8	KH2PO4		6		67
9	KOH		68		72
10	KI		19		78
11	KBr		5		68
12	KCl		7		55
13	KOTf	0	4	29	31
14	PPTS		28		67
15	NaHCO2		2		29
16	KOAc		3		16