Yog tias muaj kev txhawb nqa tias kev kwv yees qhov viscosity yog qhov tseem ceeb rau lawv ntau yam qhov kev lag luam. Cov khoom no siv los xam kom paub tias cov lus tshuaj yog li cas—tsis tshaub lossis tsis zoo li cas. Kom paub tias cov lus tshuaj yog li cas yog qhov tseem ceeb, vim nws tuaj yeem sib npaug rau qhov kev puas tsuaj thiab qhov kev ua haujlwm ntawm cov lus tshuaj nyob rau hauv ntau yam teeb meem. Piv txwv li, cov lus tshuaj siv los kho lub rooj yog xav txog qhov kev sib xyaw zoo li cas rau hauv lub rooj. Yog tias nws tshaub heev, nws yuav khiav tau heev; yog tias nws zoo li cas, nws yuav khiav thiab tsis tau txhawb tau zoo. Cov thawj tswv uas muaj lub npe tias ZONWON tsim cov khoom ntau yam intrinsic viscosity tester uas cov thawj tswv tuaj yeem siv los xam kom muaj qhov xam tshwj xeeb. Qhov no yog qhov tseem ceeb rau kev coj qhov quality control thiab kom paub tias cov khoom tau txais kev daws teeb meem rau cov kev xam tshwj xeeb