R
4
2.2 PROCEDURE
1. Immerse the cup completely into the liquid and twist several times to
dislodge any bubbles which may be clinging to the internal surface of
the cup (Figure 1, A).
2. Stir the liquid gently to ensure uniform temperature and density.
3. Leave the cup in the liquid for 1 to 5 minutes: For a Zahn cup (which
has a low mass) 1 minute will be sufficient; for cups with higher mass,
5 minutes will be better.
4. Lift the cup vertically out of the liquid (Figure 1, B) and start the
stopwatch the moment the top of the cup breaks the surface of the
liquid.
5. Watch the flow of liquid from the orifice and stop the stopwatch the
moment the flow breaks.
When using a Lory LCH Viscosity Dip Cup (Elcometer 2215),
observe the surface of the liquid and stop the stopwatch the moment the top of the
spindle appears.
AB
Figure 1. Using the
Viscosity Dip Cup
Lory LCH
Cup
2210_TMA_0317_00_05.fm Page 4 Thursday, July 15, 2010 9:38 AM
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