The Cobb Tester is a widely used laboratory instrument designed to determine the water absorptiveness or water resistance of paper, board, and similar materials. This test is essential for evaluating the sizing characteristics of paper and ensuring it meets quality standards, especially in packaging and printing applications. Built with a powder-coated steel body, precision clamping ring, and durable rubber base, the tester ensures accurate, repeatable, and standard-compliant results.
Compact and easy to operate, the Cobb Tester is ideal for R&D labs, quality control departments, and packaging manufacturers. It conforms to ISO 535, TAPPI T441, and other global testing standards.