Txawm hais tias galvanized (zinc-coated) yeeb nkab tseem suav tias yog cov khoom thauj zoo rau cov dej haus, muaj qee qhov kev txhawj xeeb txog kev noj qab haus huv yog tias qhov dej xa ua paug vim nws qhov mob acid (pH tsawg). ... Cov thawj cov dej haus rau cov qauv rau kev coj ua hmoov txhuas thiab cadmium yog 0.015 thiab 0.005 mg / L, raws.
Kev hloov mus rau tooj liab tshwm sim thaum cov kav dej galvanized tau tsa ntau yam kev txhawj xeeb txog kev noj qab haus huv. Raws li koj cov dej haus hla ntawm cov kav dej, kev noj cov paib no yog qhov kev txhawj xeeb tshaj plaws. Cov hauv qab no yog qhov teeb meem tseem ceeb uas cuam tshuam nrog dej haus.
Thaum cov kav dej no ntsaws hauv kub zinc rau galvanizing, nws yuav tsum tau sau tseg tias ib txwm tshwm sim cov zinc tsis huv. Qhov no txhais tau hais tias cov yeeb nkab tau raug rau qhov tsis zoo ntxiv xws li cov hlau lead.
Ib qho ntxiv, yog tias muaj qhov tsis muaj xeb, tom qab ntawd yuav muaj qhov sib tshooj ntawm cov hmoov txhuas tau nyob hauv cov kav dej. Cov hmoov lead no tuaj yeem xau rau hauv koj cov dej haus thiab ua rau lub cev tsis muaj zog thiab nkees. Nws kuj tseem tuaj yeem ua rau lub raum thiab lub hlwb puas.
Galvanized kav dej muaj kev nquag rau kev txwv rau cov kwj dej. Qhov no tuaj yeem ua rau cov dej tsis tshua muaj siab thoob plaws koj lub tsev.
Txij li cov kav dej no tuaj yeem corrode nrog lub sijhawm, lawv tau khi cov xau hlau rau hauv koj cov dej. Cov hlau no yuav ua rau koj cov dej tsis txaus siab. Koj tuaj yeem pom qhov no ntawm stains ntawm koj lub plooj (veneers) thiab.
