Ku saabsan nadiifinta tuubada qaawan ee saliidda:
Tuubooyinka daboolka saliidda ee qaawan waa la nadiifiyaa oo waxay yimaadaan warshadda wax soo saarta.Kahor habaynta rasmiga ah, wasakhda saliidda, carrada lime, miridhku cabirka oksaydhka iyo dahaarka duqoobay ee dusha gudaha iyo dibadda ee dhuumaha waa in la nadiifiyaa.Hababka ka saarista miridhku waxa ka mid ah buug-gacmeedka, mishiinka, buufinta, qajaarka, iwm. Waagii hore, habka wax lagu buufiyo waxa inta badan loo isticmaali jiray ka saarida miridhku ee dhuumaha ogsijiinta.Hadda, pickling ayaa loo isticmaalaa in laga saaro miridhku, saameyntuna aad bay u wanaagsan tahay.Marka lagu nadiifiyo hawo ama biyo cadaadis ah, xawaaraha cadaadiska biyaha ama cadaadiska hawadu wuxuu gaari karaa 15x20m/s, kaas oo ka saari kara wasakhda dusha tuubada, laakiin ma saari karo lakabka miridhku, miisaanka oxide, burka, burooyinka alxanka iyo burada tuurista.