Water absorbance of paper or board with the Cobb method

This test measures the water absorption properties of paper and board. The method is not suitable for grades with grammage less than 50 g/m² or embossed paper. It is also unsuitable for highly water-absorbing papers, such as blotting papers. The absorption time can be chosen by the customer. The result will be expressed as absorbed water per surface area (in g/m²).

Paper and boardPhysical and chemical properties

Suitable sample matrices

Paper or paperboard with basis weight over 50 g/m²

Typical turnaround time

2 weeks after receiving the samples

Quality system

Accredited testing laboratory

Device families

Standard specific equipment

Method expert

Ville Roininen