Parizvino, hatigone kuwana iyo saizi yemadonhwe saizi nekuverenga, asi isu tinokwanisa kuwana saizi chaiyo yembeu yedonhwe kuburikidza nekuyera kwekuyedza. Idzi nzira dzekuyera dzinosanganisira nzira yekunyudza yemvura, nzira yekuyera laser, nezvimwewo Kambani yedu ine yepasirose laser refraction particle size tester, iyo inogona kunyatso kuyera hupamhi hwemadonhwe, izvo zvakakosha kwazvo pakubvisa guruva, nekuti kana iyo dhiraidhi dhayamita idiki kwazvo, Ivo havazokwanise kubatana pamwe neguruva uye nekupfura pasi guruva. Kana hupamhi hwemadonhwe hwanyanya kukura, havazokwanise kupfura pasi guruva. Kuedza kwedu kunoratidza kuti kana hupamhi hwemadonhwe hwasvika ka5 kusvika ka5 dhayamita yeguruva, iro guruva rekudzvinyirira rakakwanisika.