ISO 535-2014 pdf free.Paper and board – Determination of water absorptiveness – Cobb method. ISO 535 specifies a method of determining the water absorptivencss of sized paper and board, including corrugated fibreboard, under standard conditions. It may not be suitable for paper ofgrammage less than 50 g/m2 or embossed paper. It is not suitable for porous papers such as newsprint or unsized papers such as blotting paper or other papers having a relatively high water absorptiveness for which ISO 8787121 is more suitable. This method is not intended to be used for precise evaluation of the writing properties of paper although it does give a general indication of suitability for use with aqueous inks. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 186, Paper and board — Sampling to determine average quality ISO 187. Paper, board and puips — Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples ISO 5269-1, Pulps — Preparation of laboratory…