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VISCOSITY
GARDCO EZ™ ZAHN (ASTM) DIP CUPS
There are five orifice sizes in a complete set of EZ™ Dip Viscosity Cups. The recommended
use range in seconds for each of the five cups is as follows:
Cup #1 This cup is used for very thin mixtures where low solids application is desired.
Cup #2 This is the most popular cup of the series and is used for most mixed paints which
have been reduced with solvent for application, regardless of the application method. It
has wide use in the automotive and similar industries.
Cups #3 & #4 These cups are used for higher solids application where extra heavy coat-
ings are specified.
Cup #5 This cup is normally used for measuring the viscosity of paints prior to reduction
with solvent.
1.
Select the proper number cup to be used from the Specifi cation Table, which is dependent on
the expected viscosity range of the material to be measured.
2.
Insure that the cup is clean and that there is no residual dried material in or around the orifi ce.
3.
Adjust the temperature, if necessary, of the test material.
4.
Completely immerse the cup into the material to be measured in a location free from
bubbles or foam, holding the cup vertically by means of the stainless steel split key ring.
5.
Measure and record the temperature of the material that is encompassed by the cup.
6.
Hold cup vertically by inserting index fi nger into handle ring. In a quick, steady motion, lift the
cup out of the sample material, starting the timer when the top edge of the cup breaks the surface.
During the fl ow time, hold the cup no more than 6" above the level of the sample material.
7.
Stop the timer when the fi rst defi nite break in the stream at the base of the cup is observed.
8.
Record the number of seconds of effl ux time, temperature and the cup number.
(Example: No. 2 EZ™ Dip Cup, 35.0 seconds at 25.1°C.)
As an option to the preceding step, refer to the conversion table furnished with the cup and as
indicated on the following page, determine the centistoke viscosity for the measured effl ux time
in seconds and record this value and the measured temperature. (Example: 111.3 centistokes
at 25.1°C.)
9.
Promptly clean the cup unless it will be used immediately for a rerun of the same material.
(Use a length of nylon fi shing line to clean the orifi ce.)
18
Cup #1
Cup #2
Cup #3
Cup #4
Cup #5
INSTRUCTIONS FOR USE
Paul N. Gardner • www.gardco.com • (954) 946-9454
40 to 60 Seconds
20 to 60 Seconds
12 to 60 Seconds
10 to 60 Seconds
10 to 60 Seconds
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