Table 1.

List of Bacillus Spores Used in This Study

Species	Strain	Origin	Biosafety Level	CFU ml−1	Resistance [log10 reduction] (0.05% paa)
B. subtilis	ATCC 6633	DSMZ Braunschweig, Germany	1	4.32x108	6.57
B. thuringiensis	DSM 350	DSMZ Braunschweig, Germany	1	4.57x108	1.86 ± 0.58
B. cereus	ATCC 12826	Pasteur Institute, France	2	2.84x108	6.42 ± 0.01
B. anthracis	Sterne 34F2	W. Beyer, University of Hohenheim, Germany	2	5.09x108	5.14a
	11/38	Institute for Consumer Health Protection and Veterinary Medicine (BgVV) Jena, Germany	3	1.66x108	1.94
	22/39	Institute for Consumer Health Protection and Veterinary Medicine (BgVV) Jena, Germany	3	2.5x108	2.52

DSMZ = German Collection of Microorganisms and Cell Cultures; paa = peracetic acid.

^a0.01% paa.