Systematic Veterinary Bacteriology and Mycology

RESISTANCE

• The endospores are highly resistant and while boiling kills the spores of most strains in 15mts.
• Autoclaving at 121ºC for 15mts and dry heat temp of 150ºC for more than one hour is completely sporicidal.
• Spores are able to survive in soil for years and they are resistant to most antiseptics.
• They are not destroyed by 5% phenol or 0.1% mercuric chloride solution in two weeks or more.
• Iodine (1% aqueous solution) and H2O2 kill the spores within a few hours.