This standard specifies the method for determining the capillary liquid absorption height of paper and cardboard by the Kremm method. This standard applies to unglued paper and paperboard, not to paper and paperboard with a capillary absorption height of less than 5 mm within 10 minutes.
GB/T 461.1-2002 history
2005GB/T 461.3-2005 Paper and board--Determination of water absorption(immersion in water)
1989GB/T 461.3-1989 Determination of absorbency of paper and board (water immersion method)