Fihirisar aikin matatar iska tana nufin ƙura ta kawar da inganci, juriya, da ƙarfin riƙe ƙurar.Ana iya ƙididdige ingancin cire ƙura bisa ga hanya mai zuwa:
Cire kura yadda ya dace=(G2/G1)×100%
G1: Matsakaicin adadin ƙura a cikin tace(g/h)
G2: Matsakaicin adadin ƙurar da za a iya tacewa (g/h)
Ƙarar kawar da ƙura kuma ya dogara da girman barbashi.Juriya yana nufin matsi daban-daban.A kan yanayin tabbatar da ingancin tacewa, ƙaramin matsa lamba zai fi kyau.Ƙarfafa juriya a ƙarshe zai haifar da babban amfani da makamashi.Juriya mai girma da yawa zai haifar da girgizar injin kwampreso.Don haka, yakamata ku maye gurbin abubuwan tacewa lokacin da juriyar tacewa ta kai ko ta kusa da matsi da aka yarda da ita.Bugu da ƙari, ƙarfin riƙe ƙurar yana nufin matsakaicin ƙurar da aka tattara a kowace yanki.Kuma sashinsa g/m2.