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Inter-day precision of the free formaldehyde determination method for tetanus toxoid and DT vaccine
| Formaldehyde added (%w/v) | Recovery for tetanus toxoid (%) (n =15) | Inter-day precision (RSD) for tetanus toxoid (n =15) | Recovery for DT vaccine (%) | Inter-day precision (RSD) for DT vaccine (n =15) (n =15) |
|---|---|---|---|---|
| 0.001 | 101.74 | 2.94 | 105.25 | 2.85 |
| 0.002 | 109.33 | 3.51 | 101.46 | 2.41 |
| 0.0005 | 108.54 | 9.94 | 113.33 | 5.99 |
