the pH - proteins become a lot more 'sticky' at low pH's
you can safely presume that if bacteria gets onto a surface, some will remain untill it is disinfected, however the survival of said bacterium over time will have its own facors, some can survive dehydration really well, others will be killed by it
If your thinking about something like the 10 second rule it doesnt really matter about time. Like the previous answer says. It is much more about what is dropped, how moist, porous and so on the material is rather than how long it is in contact.
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many many factors involved...
how porous the surface is
how damp the surface is
what bacteria it is
the pH - proteins become a lot more 'sticky' at low pH's
you can safely presume that if bacteria gets onto a surface, some will remain untill it is disinfected, however the survival of said bacterium over time will have its own facors, some can survive dehydration really well, others will be killed by it
If your thinking about something like the 10 second rule it doesnt really matter about time. Like the previous answer says. It is much more about what is dropped, how moist, porous and so on the material is rather than how long it is in contact.