Cov khoom siv portable viscometers yog cov khoom siv tshwj xeeb uas siv los xam qhov ntev lossis qhov qis ntawm cov dej. Cov khoom no yog qhov tshwj xeeb rau ntau yam kev lag luam, piv txwv li kev lag luam noj thiab kev lag luam kho mob. Qhov ntev ntawm cov dej — uas hu ua viscosity — pab cov neeg tsim khoom kom paub yuav tshwm sim li cas rau cov khoom ntawd thaum muaj kev npaj thiab kev siv. Piv txwv li, honey; nws ntev thiab mov hauv qhov ceev. Tiamsi dej yog qis thiab mov hauv qhov meej. Puas paub qhov viscosity ntawm cov khoom tuaj yeem pab cov thawj khoom kom paub tias nws tau muaj kev tsim nyob rau hauv qhov zoo tshaj plaws. ZONWON tsim cov portable Viscometers , kev siv yog qhov yooj yim, tuaj yeem siv nyob rau lub cim twg li. Ntawd pab cov neeg ua haujlwm kom muaj kev xam qhov viscosity ntawm cov dej nyob rau hauv qhov cim twg li, thiab ntawd yog qhov zoo heev rau kev tswj qhov zoo ntawm cov khoom.