Lub viscometer siv tshwj xeeb yog ib qho khoom siv rau kev kuaj xyuas tias lub zog tsis muaj zog npaum li cas. Qhov no hu ua viscosity. Txoj kev peb ua kev soj ntsuam no yog qhov twg ASTM D445 piav qhia. Lub viscometer siv tshwj xeeb yuav tsum tau siv DV17 Thov Tshuaj Siv Kev Ntuag nrog rau qhov kev ceeb toom no. Nws pab rau cov ua lag luam, xws li neeg tsim khob thiab neeg ua cua, kom paub tias lawv cov khoom muaj qhov tseemceeb tas li. Lub ntxaij uas muaj qhov tshwj xeeb yooj yim yuav tsum tau kaw ib chais lag luam, lossis txhaum cua. Nyob rau hauv ZONWON peb muab cov viscometers zoo uas nyob rau hauv qhov kev ceeb toom no, tiv taus tias muaj kev kuaj mob meej meej thiab nyob zoo