Cov khob yas yog siv los ntawm ntau cov khoom siv, tshwj xeeb tshaj yog rau kev tsim cov fwj, qhov chaw khob. Nyob rau hauv xyoo tas los no, cov me nyuam lub raj mis uas muaj Bisphenol a, muaj teeb meem. Cov kws tshaj lij tau taw qhia tias, hauv txoj kev xav, ntev npaum li cov txheej txheem ntawm kev ua lub khob yas, Bisphenol ib puas feem pua rau hauv cov qauv yas, nws txhais tau tias cov khoom tsis muaj BPA, cia nyob ib leeg. Txawm li cas los xij, yog tias muaj ib qho me me ntawm Bisphenol a tsis hloov mus rau hauv lub khob yas yas, koj tuaj yeem tso rau hauv cov zaub mov lossis dej haus. Residual Bisphenol ib tug nyob rau hauv lub khob yas, siab dua kub, tso tawm ntau dua ceev ceev. Yog li ntawd, tsis yog PC dej lub raj mis ntim nrog dej kub. Yog tias lub thawv muaj qhov tawg lossis puas, pom zoo kom tsis txhob siv, vim tias yog tias muaj cov grooves me me ntawm cov khoom yas, zais cov kab mob. Tsis txhob rov siv cov khoom siv yas yas rov qab.
