This part of IS0 5630 specifies a method for accelerating the ageing of paper and board by dry heat treatment at 105 OC.
This procedure is not applicable to certain high purity papers such as are used for insulation in electrical equipment for which IS0 5630-4 is more suitable.
This part of IS0 5630 does not give any preference for the tests to be made on the paper or board. It is left to the parties concerned to determine which tests are appropriate for the type of paper or board being evaluated.