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BSI BS ISO 3688:1999

Pulps. Preparation of laboratory sheets for the measurement of optical properties
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BSI BS ISO 3688:1999

Pulps. Preparation of laboratory sheets for the measurement of optical properties

PUBLISH DATE 2000
PAGES 12
BSI BS ISO 3688:1999

This International Standard specifies two procedures for the preparation of laboratory sheets prior to measuring the diffuse blue reflectance factor (ISO brightness). One is the traditional procedure based on preparation of sheets in a Büchner funnel using a filter paper or a wire screen. In the other procedure, the sheets are prepared in a standard sheet former (conventional or Rapid Köthen).

Details of the subsequent measurement procedure are given in ISO 2470.

It is applicable to all wood pulps and to most other types of pulp. Pulps with very long fibres, such as those made from unshortened cotton, flax and similar materials, shall be reduced to a suitable fibre length before testing by this method.

This International Standard shall be used in conjunction with ISO 2469 and ISO 2470.

SDO BSI: British Standards Institution
Document Number ISO 3688
Publication Date July 15, 2000
Language en - English
Page Count 12
Revision Level
Supercedes
Committee PAI/11
Publish Date Document Id Type View
Dec. 13, 2022 BS ISO 3688:2022 Revision
July 15, 2000 BS ISO 3688:1999 Revision