Buchholz Hardness Tester

Buchholz Hardness Tester

Buchholz hardness tester  is used to evaluate hardness of mono or multicoat paints. A beveled disc with a sharp edge is applied onto the test surface under a constant 500g.  Test load provided by a steel block holder. The trace left after 30 s. Load is measured with a 20X magnification illuminated microscope. The length of the indentation is inversely proportional to the hardness. This instruments is complies with standards as : BS EN ISO 2815, ECCA T12