The Ubbelohde Viscometer measures kinematic viscosity of transparent Newtonian liquids according to ASTM D445 and ISO 3104. Minimum sample volume is 11 mL. Minimum bath depth is 241 mm (9.5 in). Unity factor series has a constant within +/- 0.2% of the values listed. Approximate Constant (mm²/s²): 0.001. Viscosity Range (mm²/s): 0.3-1.0