NBN ISO 3688:2023

NBN ISO 3688:2023

Pulps — Preparation of laboratory sheets for the measurement of optical properties ISO 3688:2022

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Détails

This document specifies two procedures for the preparation of laboratory sheets prior to measuring optical properties. One is the preparation of pads in a Büchner funnel using a filter paper or a wire screen and the other one is the preparation of laboratory sheets in a standard sheet former (conventional or Rapid Köthen).

This document is applicable to all wood pulps and to most other types of pulp.

It is not applicable to pulps with very long fibres, such as those made from unshortened cotton, flax and similar materials, unless they are reduced to a suitable fibre length (about 2 mm) before performing the methods.

It is not applicable to recycled pulps (see ISO 21993).

It is not applicable to opacity measurements or to the determination of light scattering and absorption coefficients.

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Directives : Not yet available in DB

Informations supplémentaires

Auteur Bureau de Normalisation Belge (NBN)
Edité par NBN
Type de document Norme
ICS 85.040 : Pâtes à papier
Historique No
Mot-clé ISO 3688, ISO 3688:2023