Ukhondo mumlengalenga ndi mtundu wamtundu wapadziko lonse lapansi womwe umagwiritsidwa ntchito m'zipinda zoyera.Nthawi zambiri chitani zoyezetsa zipinda ndikuvomera potengera kupanda kanthu, kukhazikika komanso kusintha.Kukhazikika kosalekeza kwa ukhondo wa mpweya ndi kuwononga mpweya ndiye muyeso waukhondo wa zipinda.Muyezo wamagulu ukhoza kugawidwa mu ISO 5 (Kalasi A/Kalasi 100), ISO 6(Kalasi B/Kalasi 1000), ISO 7(Kalasi C/Kalasi 10000) ndi ISO 8(Kalasi D/Kalasi 100000).
