Test Tube (optical tube)

Lub raj ntsuas (polarimeter raj) yog cov khoom siv ntawm lub polarimeter (optical qab zib ntsuas)-rau cov qauv thauj khoom.
Cov iav zoo tib yam kuaj cov raj muab los ntawm peb lub tuam txhab yog hom npuas thiab hom funnel, thiab cov lus qhia tshwj xeeb yog 100mm thiab 200mm.

Lub tuam txhab thawj lub raj muaj qhov zoo ntawm kev ua haujlwm siab, ruaj khov zoo, thiab tsis muaj kev sib hloov kho qhov muag.