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pKa values of the indicator cotton swabs before and after gamma sterilization.
| ICS1 (Not Sterilized) | ICS1 (Sterilized) | ICS2 (Not Sterilized) | ICS2 (Sterilized) | |
|---|---|---|---|---|
| Five swabs measured once | 5.89 (0.07) | 5.85 (0.06) | 7.38 (0.11) | 7.34 (0.05) |
| One swab measured five times | 5.75 (0.11) | 5.87 (0.07) | 7.38 (0.09) | 7.37 (0.03) |
