The Cobb Tester is a widely used instrument for measuring the water absorbency or liquid penetration
capacity of paper, cardboard, and other sheet materials. It evaluates how much water a material can absorb
over a specific period, which is critical for determining the suitability of the material for various applications,
particularly in packaging, printing, and coating industries. The Cobb Test is an important quality control
measure to ensure that materials meet industry standards for water resistance.