Brookeld Engineering Labs., Inc. Page 62 Manual No. M/03-165-D0410
The shear rate of a given measurement is determined by: the rotational speed of the spindle, the size
and shape of the spindle, the size and shape of the container used and therefore the distance between
the container wall and the spindle surface.
A repeatable viscosity test should control or specify the following:
1) Test temperature
2) Sample container size (or spindle/chamber geometry)
3) Sample volume
4) Viscometer model
5) Spindle used
6) Whether or not to attach the guard leg
7) Test speed or speeds (or the shear rate)
8) Length of time or number of spindle revolutions to record viscosity.
9) How sample was prepared and/or loaded into container.
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