This standard specifies the method for measuring the hygroscopic elongation of paper and paperboard when the relative humidity is changed from an equilibrium state of (33 ± 2)% to an equilibrium state of 66 ± 2)%. This standard is applicable to almost all papers and paperboards, but not crepe paper and cardboard.
JIS P 8153:2006 Referenced Document
JIS P 8110 Paper and board -- Sampling to determine average quality
JIS P 8111 Paper, board and pulps -- Standard atmosphere for conditioning and testing
JIS P 8124 Paper and board -- Determination of grammage*, 2011-03-22 Update
JIS P 8153:2006 history
2006JIS P 8153:2006 Paper and board -- Measurement of hygroexpansivity -- Part 1: Hygroexpansivity up to a maximum relative humidity of 68 %