Cov kev ua tau zoo ntawm kev haus dej cawv tsuas yog suav nrog cov hauv qab no:
Muaj kev lom zem ntau heev: cawv cov dej ua kom sov cov cawv thawj zaug uas npau suav thiab dej cawv kom tau txais kev haus dej cawv ntau. Kev haus cawv ntawm cov cawv uas npau suav feem ntau yog li 40 degrees lossis ntau dua, thiab qee leej tseem nyob ze 96 degrees.
Cov ncauj lus tsis loj: Thaum lub sij hawm distillation, cawv yog vaperities thiab condensed, ua rau lub impurity cov ntsiab lus ntawm cov cawv uas npau suav tsawg dua.
Ntev rau lub neej muaj sia: Vim tias cov dej cawv ntau thiab ob peb impurities ntawm cov cawv distilling tau ntev, nws tuaj yeem khaws cia ntev li ntawm chav tsev kub, feem ntau rau 5-10 xyoo. Txawm tias tom qab qhib lub raj mis, qhov ua tau zoo tuaj yeem tswj tau ntau tshaj ib xyoos.
Muaj feem rau ntau yam dej cawv: distilled cawv yog qhov tsim nyog rau kev xaiv cov dej cawv, hom dej cawv, brieny xaiv tau ntau yam ntawm cov tsw qab thiab qab.
Ntau cov distillations los txhim kho kev coj dawb huv: txhawm rau txhawm rau txhim kho cov kev npau taws, ntau cov distillations tuaj yeem ua. Txhua qhov distillation yuav tshem tawm qee qhov tsis huv, ua cov cawv zaum kawg.
