Tsim los ntawm yas, iav, borosilicate iav lossis dej qab zib khob, reagent fwj tshwj xeeb nres lossis lub kaus mom, uas tiv thaiv cov ntsiab lus los ntawm kev sib kis lossis sab nraud. Reagent Fwj tau zoo heev rau khaws cov hmoov thiab kua. Reagent fwj hauv tinted amber los yog liab tiv thaiv lub teeb tsom ntawm UV teeb, pom lub teeb thiab infrared hluav taws xob. Reagent fwj muaj nyob nrog qhov ncauj nqaim rau kev tswj tau zoo dua thaum hliv tau yooj yim lossis cov ntsiab lus rov qab. Lub kaus mom thiab cov tshuaj ntxuav tawm rau reagent fwj yuav tsum tau raug xaiv kom zoo, raws li lawv cov khoom lossis ob sab qhua tuaj yeem cuam tshuam tsis zoo nrog cov ntsiab lus ntawm lub raj mis.