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Measuring the viscosity:
Using the viscosity measuring cup
1. Thoroughly stir the coating material before starting measurement.
2.Immerse the viscosity measuring cup
(contents 100cm3) completely in the
coating material below rim level and
allow to fill.
3.Lift the viscosity measuring cup and
measure the time in seconds until the
flow of coating material stops.
4. This run-out time is called DIN
seconds (DIN-s).
Viscosity table:
Paint is “thinned” by adding the substance upon which the paint is based.
If it is water-based paint then water is added; if oil based then mineral
spirit or manufacturer’s recommended thinner is added. If the paint
requires thinning, start with a 10% dilution of the paint. To do this, partially
fill a container with one quart of paint. The viscosity cup supplied with the
unit holds 1/10 of a quart. Block the hole in the viscosity cup with your
finger and fill up with the required thinner. Add the thinner to the paint and
stir, and re-measure the viscosity. If the paint requires additional thinning,
repeat this step by adding 5% (5% will be equal to half a viscosity cup) with
the required thinner until desired viscosity is achieved.
COATING MATERIAL
Solvent containing gloss paints
Primers
Mordants/Dye
Component paints
Clear varnishes
Water-dilutable gloss paints
Motor-vehicle enamels
Wood preservatives
VISCOSITY DIN-S
15-50
25-50
undiluted
20-50
15-40
20-40
20-40
undiluted
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