Table I.

Reported Zeta Potential of various micro-organisms, including SARS-CoV-2

Micro-organism	Zeta potential (mv)	References
Escherichia coli	−47	[12]
Staphylococcus aureus	−38	[12]
Pseudomonas aeruginosa	−40	[12]
Mycobacterium tuberculosis	−28.8	[13]
Aspergillus niger spores	−15	[14]
MS2 Coliphage	−10	[15]
SARS-CoV-2	−25.675	[16]
PhiX174 Coliphage	−31.78	[14]

It is important to note that regardless of the origin or type, Zeta Potential is always negative for microbes.