Isilica esinombala wesihlabathi esinombala we-silica yezingane ezidlalayo
Isihlabathi esinombala sihlukaniswe sibe isihlabathi esinombala wemvelo, isihlabathi esinombala ocwebezelayo, kanye nesihlabathi esinombala odaywe. Izici zaso yilezi: imibala ekhanyayo, ukumelana ne-asidi ne-alkali, ukumelana ne-UV, kanye nokungashisi.
Uhlobo: isihlabathi sombala wemvelo, isihlabathi esinombala.
usayizi: 10-20.20-40.40-80.80-120.120-180.200mesh.
Bhala umlayezo wakho lapha bese uwuthumela kithi
