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I think about to buy a plastic instrument- a Tiger tuba from Rheinsound.
Does brass have an antimicrobial effekt, more than ABS plastic?
Is a plastic instrument after some times a hoard for germs?

https://en.wikipedia.org/wiki/Brass#Ger ... plications
Who knows if it is more antimicrobial than plastic, but apparently it is somewhat antimicrobial.

Wouldn't bet my life on it, though.