Cov hnab looj tes pov tseg siv nyob rau hauv ntau qhov chaw yuav tsum ua kom tau raws li kev nyab xeeb thiab kev ua tau zoo. Raws li cov khoom uas tuaj rau hauv kev sib cuag ncaj qha nrog tib neeg lub cev lossis khoom noj, lawv cov txheej txheem tsim khoom muaj kev tswj hwm nruj ntawm cov khoom siv raw, cov qauv kev nyiam huv, thiab lub cev lub cev kom muaj kev nyab xeeb thaum siv.
Cov hnab looj tes pov tseg uas npaj rau kev sib cuag zaub mov yuav tsum ua raws li cov qauv tsim nyog; cov ntaub ntawv siv yuav tsum muaj kev nyab xeeb thiab tsis yog - tshuaj lom, tsis muaj tshuaj lom ntau tshaj li qhov txwv, thiab yuav tsum tsis txhob kis cov zaub mov thaum sib cuag. Cov hnab looj tes uas siv tau yooj yim rau kev siv zaub mov yuav tsum ua raws li cov qauv kev nyab xeeb khoom noj hauv lub tebchaws, xws li *National Food Safety Standard for Plastic Materials and Articles Intended to Come in Contact Food* (GB 4806.7).
Cov hnab looj tes pov tseg feem ntau yuav tsum ua raws li cov qauv rau cov khoom siv kho mob. Cov khoom lag luam xws li kev kho mob - qib latex lossis nitrile hnab looj tes raug kuaj xyuas kom tsis muaj menyuam, kev sib khi ruaj khov, lub zog tensile, thiab kev sib tsoo kom ntseeg tau tias lawv ua tau raws li kev tiv thaiv kev kho mob. Cov kev qhia tshwj xeeb thiab cov qauv ntsuas sib txawv nyob ntawm qhov kev siv thiab kev ua haujlwm ib puag ncig.
Qee lub tuam txhab kuj tseem tsim cov qauv kev lag luam sab hauv (Q) txhawm rau tswj cov khoom lag luam qhov ntev, qhov pom, tuab, kev ntsuas kev ua tau zoo, thiab cov txheej txheem tsim khoom. Kev sib xyaw ua ke ntawm lub teb chaws, kev lag luam, thiab cov qauv kev lag luam pab txhim kho qhov zoo ntawm cov hnab looj tes pov tseg, ua kom lawv ua tau zoo dua cov kev xav tau ntawm cov khoom noj, kev kho mob, thiab kev lag luam, nrog rau kev siv txhua hnub.