How are the trays at the airport security lines antimicrobial? How do you make a tray microbial without cleaning it?

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How are the trays at the airport security lines antimicrobial? How do you make a tray microbial without cleaning it?

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Some substances just don’t allow for a lot of bacterial growth.

Copper is one example; it can mess with bacteria and kill them.

Additives to the plastic trays perform a similar function to copper, disrupting the structure of the bacteria and killing it.

.. and can we trust them to actually be anti microbial?

Some elements are naturally antimicrobial through chemical/molecular processes. Silver and copper, for example, strip electrons from molecules in the cell wall causing it to break down/die.

They react with the microbes chemically and destroy them. Copper and silver does this by stripping electrons. Pure wood (like, wood with no finishings – not implying there is a wood atom) will strip water from the cells too which can cause cell death as well. Wood cutting boards when dry are much more safe then plastic ones for this reason. Any finishing such as lacquer will however create a barrier though. I believe some butchers used to spread sawdust around for this reason.

Also, Heat is an option albeit not really safe to use in an airport.

If I recall, the TSA grey plastic bins you see at airports are using a plastic formulation that includes one of Microbans fine powdered zinc or silver mixed in.

The zinc or silver ions in the powder formulation mixed in with the plastic are toxic to many forms of bacteria.