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Recovery of [18F]fluoride (with respect to trapped activity) with the intermediate vial system as a function of eluent with varying compositions of MeCN. Recovery values are average of n repeats ± standard deviation.
| Solvent composition (% MeCN in DI water v/v) | K3PO4 (mM) | 18-crown-6 (mM) | Recovery (% of trapped activity, decay-corrected) |
|---|---|---|---|
| 50 | 24 | 152 | 96 (n=1) |
| 80 | 24 | 136 | 84 ± 6 (n= 6) |
| 90 | 24 | 136 | 66 (n=1) |
| 93 | 24 | 152 | 43 (n=1) |
