Washability and Scrub Resistance Tester,
Model 494 MC

Assessment of washing and scrubbing resistance
as well as cleanability of paints

The ERICHSEN Washibility and Scrubbing Resistance Tester, Model 494 MC, is mainly
intended for the determination of the washing and scrubbing resistance as well as cleanability of
dispersion paints (specifically ”wall paints”). The wide range of its adjustable parameters allows also
some further tailored/customized testing matters (for example for testing cleaning agents/solutions,
etc.).

The instrument (attached with leveling feet) has a top cover plate on which the steel trough for the
testing performance is placed. Further, it is equipped with two specimen clamping devices. A
high-precision step motor operated by a micro controller allows a periodic linear movement of the
drive frame which holds/guides the abrasion bodies, with a high repeatability. The swivelmounted
frame for inserting the abrasion bodies is designed for holding/guiding up to three of them.
Due to this up to three parallel abrasion tests are possible. For tests according with DIN EN ISO
11998, the supplied ISO adapter has to be mounted.

The operation via keypad and 6-line-display is comfortable, with the functions:

• controlling the stroke (start, stop, reset)
• setting the test parameter (stroke rate, stroke path, number of double strokes)
• storage of frequently used test sequences (up to 20 sets of parameters)

Accessories

Brushes, holders, micro dosing pump.