Standard Test Method for
Viscosity by Dip-Type Viscosity Cups1
This standard is issued under the fixed designation D 4212; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of the last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of viscosity
of paints, varnishes, lacquers, inks, and related liquid materials
by dip-type viscosity cups. This test method is recommended
for viscosity control work within one plant or laboratory and
should be used to check compliance with specifications only
when sufficient controls have been instituted to ensure adequate comparability of results.
1.2 Viscosity cups are designed for testing Newtonian
and near-Newtonian liquids. If the test material is non-Newtonian, for example, shear-thinning or thixotropic, another
method, such as Test Methods D 2196, should be used. Under
controlled conditions, comparisons of the viscosity of nonnewtonian materials may be helpful, but viscosity determination methods using controlled shear rate or shear stress are
preferred.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D 1200 Test Method for Viscosity by Ford Viscosity Cup2
D 2196 Test Methods for Rheological Properties of NonNewtonian Materials by Rotational (Brookfield) Viscometer2
D 4287 Test Method for High Shear Viscosity Using the ICI
Cone/Plate Viscometer2
E 1 Specification for ASTM Thermometers3
3. Terminology
3.1 Definitions:
3.1.1 near-Newtonian liquid—a liquid in which the variation of viscosity with shear rate is small and the effect on
viscosity of mechanical disturbances such as stirring is negligible.
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