Table-4.

The RF (log₁₀ TCID₅₀/ml) of fresh charcoal ash and slaked lime applied for inactivating Newcastle disease virus and Avian influenza virus under wet and dry conditions at consecutive re-suspension times with a 3-min incubation period.

Number of times resuspended	Avian influenza virus		Newcastle disease virus
	Fresh charcoal ash	Slaked lime	Fresh charcoal ash	Slaked lime
1	>5.00*	>4.75*	>5.75*	>5.00*
2	0.50	>4.75*	5.25*	>5.50*
3	0.50	>4.75*	0.00	>5.50*
4	0.50	>4.75*	0.50	>5.50*
5	0.50	>4.75*	NT	>5.50*
6	NT	>5.00*	NT	>5.50*
7	NT	>5.00*	NT	>5.50*
8	NT	>5.00*	NT	3.25*
9	NT	>5.00*	NT	3.75*
10	NT	>5.00*	NT	2.50
11	NT	>5.00*	NT	1.00
12	NT	>4.75*	NT	0.00
13	NT	2.50	NT	NT
14	NT	2.25	NT	NT
15	NT	1.75	NT	NT

^*Inactivation regarded effective when RF was ≥3, RF=Reduction factor