ISO 534:2011 PDF

Scope: This International Standard specifies two methods for measuring the thickness of paper and board: a) the measurement of a single sheet of paper or board as a single sheet thickness; b) the measurement of a pack of sheets of paper as a bulking thickness. This International Standard also specifies calculation methods — for the apparent sheet density and for the apparent bulk density, and — for the apparent specific sheet volume and for the apparent specific bulk volume from the thickness determinations. This International Standard is not applicable to corrugated fibreboard. In addition, the measurement of bulking thickness, method b) above, is not suitable for board1). NOTE The two methods generally lead to different results. These methods are not applicable to tissue paper and tissue products. For tissue paper and tissue products, ISO 12625-3 should be used.

ISO 534:2011 Referenced Document

ISO 186 Paper and board - Sampling to determine average quality
ISO 187 Paper, board and pulps; standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples*， 2022-01-01 Update
ISO 536 Paper and board — Determination of grammage*， 2019-11-25 Update

2011 ISO 534:2011 Paper and board - Determination of thickness, density and specific volume
2005 ISO 534:2005 Paper and board - Determination of thickness, density and specific volume
1988 ISO 534:1988 Paper and board; determination of thickness and apparent bulk density or apparent sheet density
1980 ISO 534:1980 Paper and board — Determination of the thickness of single sheets (and method of calculation of the apparent density of board)