TABLE 5.

Calculated treatment times to achieve a six-log reduction for the first-order and Weibull (Weibull-H) models for B. subtilis subsp. niger spores and S. albus during ClO₂ gas inactivation

Gas concn (mg/liter)	RH (%)	Time (min)
		B. subtilis subsp. niger spores		S. albus
		First-order model	Weibull (Weibull-H) model	First-order model	Weibull (Weibull-H) model
1	70	85.14	81.57	59.64	68.68
2	70	68.34	63.14	40.08	43.29
3	70	52.80	47.15	25.68	28.17
5	70	28.68	26.93	19.02	21.32
2	30	195.42	173.99	139.56	167.22
2	50	114.48	106.62	81.66	93.79
2	90	28.08	26.47	9.30	9.56