F‑Value Calculator
F = D × log reduction · F₀ at 121°C
Lethality Parameters
F = D × log reduction
F₀ = F × 10^((T − Tref)/z)
F‑Value Results
F = D × log reduction
—
minutes
F₀ per minute at various temperatures
| Temp (°C) | F₀ (min⁻¹) | Application |
|---|---|---|
| 100 | 0.008 | Pasteurization |
| 110 | 0.077 | Low‑temp sterilization |
| 115 | 0.245 | Pharmaceuticals |
| 121 | 0.975 | Reference (F₀ standard) |
| 125 | 2.448 | High‑temp short time |
| 130 | 7.743 | Flash sterilization |
z = 10°C assumed [citation:5]
Sterilization Standards
Overkill: F₀ ≥ 12 min
C. botulinum: F₀ ≥ 2.52 min (12D)
Medical devices: F₀ ≥ 8 min