1. Ua ntej yaug qhov chaw ntawm lub rooj tsavxwm nrog ntau cov dej huv;
2. Siv ib daim ntaub mos uas ntub rau hauv xab npum diluted nrog dej kom maj mam so ntawm qhov chaw kuaj;
3. Yaug lub board nto nrog dej kom ntau kom ntxuav cov av;
4. Txheeb xyuas qhov chaw ntawm lub rooj tsavxwm, thiab ntxuav cov chaw uas tsis tau ntxuav nrog xab npum;
5. Yaug lub rooj tsavxwm nrog dej huv kom txog thaum lub xab npum ntxuav tag.
Lus Cim: Tsis txhob ntxuav lub vaj huam sib luag kub (thaum qhov kub siab tshaj 40 degree), vim tias cov evaporation ceev ntawm cov dej ua rau muaj teeb meem rau cov xim!
Nws yog ib qho tseem ceeb tshwj xeeb uas yuav tsum nco ntsoov tias thov xaiv cov tshuaj ntxuav kom haum. Lub hauv paus ntsiab lus tseem ceeb yog: koj yuav tsum xaiv cov tshuaj ntxuav tes! Thov tsis txhob siv cov tshuaj muaj zog alkaline xws li potassium hydroxide, sodium hydroxide lossis sodium carbonate, cov kua qaub uas muaj zog, cov tshuaj detergents thiab cov tshuaj pleev xim-soluble detergents.
