Tsis muaj ib txoj kev lees paub rau cov kev faib tawm cov xim. Qhov laj thawj yog tias muaj ntau yam xim ntxuav, cov tshuaj lom neeg yog qhov sib txawv, thiab kev siv yog ntau yam. Yog li no, txoj kev twg yog qhov tsis zoo rau kev faib tawm.
Cov hom kev faib tawm ntau yog faib cov pigments rau hauv cov xim inorganic thiab cov organic xim raws lawv cov tshuaj lom neeg muaj pes tsawg leeg. Hais txog kev ua tau zoo, inorganic pigments muaj lub teeb pom kev zoo, tiv tshav kub, thiab lub zog muaj zog zoo, tab sis cov chromatogram tsis tiav, lub zog muaj hluav taws xob tsawg, lub teeb ci xim tsis zoo, thiab qee cov ntsev hlau thiab oxides muaj tshuaj lom ntau dua. Cov xim muaj xim muaj ntau cov qauv tsim, ua tiav chromatograms, ci thiab ntshiab ntxoov, thiab muaj zog xim muaj zog, tab sis lawv muaj lub teeb tsis zoo, huab cua tsis kam thiab tshuaj lom neeg ruaj khov, thiab nws kim dua.
Cov xim fluorescent tau muab faib ua cov xim fluorescent fluorescent (xws li cov xim fluorescent siv hauv cov roj fluorescent thiab cov tshuaj pleev xim fluorescent) thiab organic fluorescent pigments (tseem paub tias hnub ci fluorescent pigments): tsuas yog cov khoom siv nrog cov qauv tshuaj tshwj xeeb tuaj yeem muaj cov khoom fluorescent. Txawm li cas los xij, cov fluorescent colorants lawv tus kheej feem ntau muaj qhov ua tau txais qhov ua tsis tau zoo hauv lub teeb tawm mus thiab cov kuab tshuaj tiv thaiv. Ib txoj hauv kev los mus kov yeej cov kev tsis txaus ntseeg no yog kom fuse lawv mus rau hauv lub moj khaum ntawm cov ntaub ntawv polymer los ntawm kev siv tshuaj lossis kev siv lub cev, thiab tom qab ntawd txuas ntxiv lawv rau hauv cov xim. Cov khoom siv polymer siv rau lub hom phiaj no tsis tsuas yog ua cov kuab tshuaj rau cov xim fluorescent colorant, tab sis kuj muaj kev tiv thaiv rau cov xim fluorescent colorant, yog li muab cov fluorescent colorant zoo dua lub teeb tsis kam thiab cov kuab tshuaj tiv thaiv.
