Viscometer^ Ubbelohde Viscometer, with a more rugged design than standard Ubbelohde viscometers, measures kinematic viscosity of transparent liquids according to ASTM D445 and ISO 3104. Min sample vol: 11 mL. Min bath depth: 10 in. Size 600. Constant 20 cSt/s. Viscosity range 4000-20000 cSt.