Chalking Rate Tester according to Kempf Model 241 - ERICHSEN

Introducing the Kempf Chalking Rate Tester Model 241

The initial signs of weather impact on paint coatings reveal themselves through the process of chalking, where the paint’s surface begins to disintegrate and pigment particles loosen. This can significantly shorten the lifespan of the coating. The Kempf Chalking Rate Tester Model 241 is specifically designed for the quantitative determination of a paint’s chalking rate, an essential factor in assessing the durability and longevity of paint jobs against environmental elements.

Advanced Features for Comprehensive Testing

Made with a light metal cylinder and a 40 mm diameter rubber stamp with a Shore hardness of A 60 ± 5, this device applies up to 250 N of pressure to transfer loose pigment particles onto photographic paper. This allows for a direct comparison with a chalking scale or a reference paint to evaluate the coating’s degradation. The Kempf Chalking Tester is essential for selecting the right materials, determining pigment/volume concentration, evaluating weathering resistances, and comparing raw materials and finished products.Its design incorporates a strong integral spring and engraved ring markings for precise application adjustments, while the recommended use of a special stand (sold separately) ensures even pressure application across the stamp.

Essential for Material Selection and Quality Control

This tool is invaluable for manufacturers and laboratories looking to optimize the weather resistance of their products and extend the longevity of exterior paint applications. Whether for new product development or quality assurance, the Kempf Chalking Rate Tester Model 241 provides an accurate and reliable assessment of a paint’s chalking propensity.