ALTANA BYK-Gardner Dip Viscosity Cups Zahn Type - Manual (Page 7)

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General Information
1,100 cSt can be measured with Cup No.4, and
extremely viscous liquids and mixtures from 460
to 1,840 cSt are measured with Cup No.5.
Note the overlap in viscosity ranges between dif-
ferent cups. If the expected viscosity range of your
application is likely to exceed the range of a given
cup, consider use of a cup with a higher number.
Example: Mixed paint, expected range 200-400
cSt, use Cup No. 3 instead of Cup No.2.
These instruments are designed to comply with
the requirements of the following test methods or
standards:
ASTM 0816
ASTM 01084
ASTM 04212.