Abstract： AS 1301.457:2020 pdf download.Methods of test for pulp and paper Method 457: Determination of moisture content in paper, board and pulps. 5.2 Containers Containers for preventing changes in moisture content during the transporting and weigh...

AS 1301.457:2020 pdf download.Methods of test for pulp and paper Method 457: Determination of moisture content in paper, board and pulps.

5.2 Containers

Containers for preventing changes in moisture content during the transporting and weighing of test pieces, having airtight lids or other equivalent means of sealing, and made from a lightweight material not sublect to change under conditions of drying specified In this document. Where test pieces are taken according to AS/NZS 1301.417s, the containers need to be large enough to contain

sheets without cutting or tearing them. Before using a container, determine its tare weight.

5.3 Drying oven

A drying oven capable of being maintained at an air temperature of 105 i 2 C in the usable volume and having forced ventilation.

5.4 Desiccator

A dessicator equipped with freshly dried desiccant.

6 Sampling

Take a sample which is representative of the paper, board or pulp the moisture content of which is to be determined.

Two standard sampling procedures for determining the moisture content of a lot exist, although any alternative procedure may be

followed

NOTE When the purpose is to obtain test pieces from a lot of paper or board. AS/NZS 1301.417s may be fellowed. When the purpose is to obtain test pieces from a lot of pulp in bale or roll form, AS/NZS ISO 7213 may be followed.

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