For mouthpieces of brass instruments and transverse flutes- In contrast to common disinfecting sprays or gas sterilisation, its anti-microbiotic and virus-inactivating effect lasts at least seven days after one single use.- Ideal for the use in schools, music schools, kindergartens and dealers respectively for instruments that are played by different musicians, for instance student instruments, rental instruments, and instruments at music expositions etc.- Contents 20 ml