Table 2: Fluorescent molecules used and percent leakage of encapsulated molecules after 1 h of immersion in buffer solution.
*Data from reference 9.
| Molecular weight | Leakage (%) | |
| Fluorescent molecules | | O-2G | P-2G* |
| Fluorescein | 332 | 39 | 58 |
| FITC-PEG1000 | 1388 | 16 | 20 |
| FITC-PEG2000 | 2388 | 5.6 | 10 |