Solvent Rub Resistance Tester – MEK Tester QualiMEK
Solvent Rub Resistance Tester – MEK Tester QualiMEK is designed in accordance with ASTM D4752 and NCCA11-18《Test Method for Measuring MEK Resistance of Ethyl Silicate (Inorganic) Zinc-Rich Primers by Solvent Rub》. This test typically uses methyl ethyl ketone (MEK) as the solvent to assess the resistance or cure level of paint topcoats and primers.
ASTM D4752 involves rubbing the surface of a baked film with cheesecloth soaked in MEK until the film fails or breaks. Specifications include the type of cheesecloth, stroke distance, stroke rate, and applied pressure. A double rub is counted when the stroke is forward and backward.
This method is widely used in the paint industry as it provides a quick, relative estimation of cure level without needing long-term exposure results. Tests on two-component zinc-rich primers have shown good correlation with curing determined by diffuse reflectance infrared spectroscopy.
