Kubva payakagadzirwa makore anodarika zana apfuura, simbi isina simbi ndiyo yave kushandiswa nevakawanda uye kufarirwa pasi rose.Chromium yemukati inopa kuramba kwayo kubva mukuora.Kupokana kunogona kuratidzwa mukudzikisa maasidhi pamwe nekupokana nekurwiswa kwepitting mumishonga yechloride.Iine hudiki hwekugadzirisa hunodiwa uye kupenya kwakajairika, zvichiita kuti ive yakanakisa uye yakanakisa zvinhu zvepombi dzesimbi isina tsvina.