Hierarchy of Microbial Resistance to Disinfectants and Sterlilants

	Microorganism	Aqualution (Nemesis eH2O) BS EN tests
Most Resistant -- >	Spores (eg C. difficile)	BS EN 13704:2002
	Mycobacteria (eg M. tuberculosis)	BS EN 14204:2012
	Non-Enveloped Viruses (eg Norovirus, Polio)	BS EN 14476:2013
	Fungi (eg Candida albicans)	BS EN 13697:2001
	Bacteria (eg MRSA, VRE, Acinetobacter)	BS EN 1276:2009; BS EN 13697:2001; BS EN 1656:2009
Most Susceptible -- >	Enveloped Viruses (eg Coronavirus, HIV, Influenza)	BS EN 14476:2013
Adapted from Spaulding, 1957 and Rutala and Weber, 2014