Mchenga wamitundu umagawidwa m'mitundu yachilengedwe, mchenga wothira utoto, ndi mchenga wothira utoto. Makhalidwe ake ndi awa: mitundu yowala, kukana asidi ndi alkali, kukana UV, komanso kusatha.
Mtundu: mchenga wachilengedwe, mchenga wamitundu.
kukula: 10-20.20-40.40-80.80-120.120-180.200mesh.
