The two-channel multifunction abrasion scrub testers are designed to perform linear abrasion, washability and scrub-resistance tests on paints and coatings. The possibility of using different test heads makes the range particularly versatile for laboratory inspections and quality-control checks, where the behaviour of a coated surface exposed to repeated rubbing, cleaning or wet abrasion must be assessed.
An abrasion scrub tester for paints and coatings makes it possible to verify how effectively an applied film maintains its surface characteristics when subjected to repeated contact with a brush, sponge or abrasive pad. Depending on the method applied, the test may reveal wear, changes in appearance, loss of coverage or variations in coating cleanability.
The operating principle involves securing the coated sample on the test platform and subjecting it to the reciprocating movement of the selected test head. Depending on the configuration, the test can be carried out dry or with controlled use of a liquid, simulating conditions consistent with washability, wet abrasion, scrub resistance or dirt-removal tests.
A distinctive feature of these abrasion testers is the presence of two operating channels, allowing the test to be performed on two surface paths during the same test cycle. This solution is useful when comparing two samples, checking different areas of the same panel or managing repeated tests on paints and coatings more efficiently.
The range is suitable for coatings where behaviour during cleaning or rubbing operations must be assessed, including washable paints, protective finishes, coatings applied to test panels and coated surfaces intended to be cleaned or exposed to repeated contact during use.
Different configurations are available, selected according to the required test method and the type of action applied to the surface:
- SAAB526/1, with nylon brush, for scrub-resistance tests in accordance with ASTM D2486
- SAAB526/2, with abrasive pad, for wet-abrasion and cleanability tests in accordance with ISO 11998
- SAAB526/3, with sponge, for tests in accordance with ASTM D3450
- SAAB526/4, with sponge and abrasive pad, for tests in accordance with ASTM D4213
- SAAB526/5, with sponge, for evaluating cleanability and dirt pickup resistance in accordance with ASTM D4828
- SAAB526/6, with bristle brush, for specific testing requirements involving this type of head
- SAAB527, configured with a nylon brush and abrasive pad to provide, in one instrument, the configurations intended for tests in accordance with ASTM D2486 and ISO 11998
The SAAB527 model is particularly suitable when the laboratory needs to carry out both brush scrub-resistance tests and wet-abrasion tests with an abrasive pad. The availability of both configurations makes it possible to address different inspection requirements while using the same two-channel testing platform.
Parameters are set via the touchscreen, allowing the operator to configure the test and monitor its progress easily. The adjustable-flow pump also allows liquid dosing to be managed during wet-abrasion or washability tests, helping maintain more controlled operating conditions.
Abrasion and rubbing tests are useful both during coating development and in production checks. Comparing samples produced with different formulations or application cycles makes it possible to assess finish resistance under simulated use conditions and identify the solution most consistent with the intended application.
The two-channel multifunction abrasion scrub testers therefore provide a flexible solution for inspecting paints and coatings through different linear-abrasion, washability, cleanability and scrub-resistance tests, selecting the most suitable configuration according to the required method.
Applications
- Linear abrasion tests on paints and coatings
- Wet-abrasion tests on paints and coatings
- Assessment of paint washability
- Inspection of the scrub resistance of coated surfaces
- Verification of cleanability and dirt pickup resistance
- Comparison between different formulations or application cycles
- Testing on two surface paths during the same cycle
- Tests with brush, sponge or abrasive pad according to the required method
- Testing in accordance with ASTM D2486, ISO 11998, ASTM D3450, ASTM D4213 and ASTM D4828
FAQ – Two-channel multifunction abrasion scrub testers
What is a two-channel multifunction abrasion scrub tester used for?
It is used to assess the behaviour of paints and coatings subjected to repeated abrasion, washing or rubbing cycles, using the test configuration most suitable for the required method.
Which tests can be carried out with these abrasion testers?
Depending on the head used, wet-abrasion, washability, scrub-resistance, cleanability and dirt pickup resistance tests can be performed on coated surfaces.
Why is the instrument called multifunction?
Because it can be configured with different test heads, such as brushes, sponges or abrasive pads, allowing different inspections to be performed on the same type of platform.
What is the advantage of the two operating channels?
The two channels allow two surface paths to be tested during the same cycle, facilitating comparisons between samples or checks on different areas of the same panel.
How is a wet-abrasion test performed on a coating?
The sample is subjected to the reciprocating movement of the test head specified by the method, with controlled application of liquid where required. At the end of the test, coating behaviour is assessed after the completed cycles.
Is the adjustable pump useful for every test?
The pump is particularly useful for tests involving a liquid, because it allows dosing to be managed according to the requirements of the applied method.
Which surfaces can be tested?
Tests can be carried out on paints, coatings, protective finishes and coated samples compatible with the instrument configuration and selected procedure.
Which standards are associated with the range configurations?
The available configurations allow tests to be carried out in accordance with ASTM D2486, ISO 11998, ASTM D3450, ASTM D4213 and ASTM D4828, selecting the test head and settings consistent with the required method.
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