SIST ISO 5627:1996/Cor 1:2011 PDF

This International Standard specifies a method of measuring the smoothness of Paper and board, called the Bekk method. The smoothness of a wide range of Papers and boards may be measured by this method and it is especially recommended for smooth Papers and boards. However, for very smooth samples, measurement times may be impractically long. This method is not recommended for materials greater than 0,5 mm thick or very permeable Papers and board, since the amount of air passing through the test piece tan influence the result. It is not recommended for newsprint and it is not suitable for rough Papers and boards.