![]() The second column includes an open upper end and a lower end having a second orifice that is submersible in the test liquid for conducting the test liquid under a pressure head between the second column and the test chamber. A second column is mounted within the test chamber in substantial alignment with, and having dimensions substantially identical to the first column. An elongate first conducting column mounted within the reference chamber includes an open upper end that interconnects the reference chamber and the first column and a lower end having a first orifice that is submersible in the reference liquid for conducting the reference liquid under a pressure head between the first column and the reference chamber. There is a test chamber attached to the reference chamber which is partially filled with a test liquid having a volume and viscosity/temperature characteristic that are substantially similar to those of the reference liquid. ![]() A viscosity test apparatus is disclosed including a reference chamber that is partially filled by a predetermined volume of reference liquid having a known viscosity.
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