RO
SR ISO 3688:2023
Pulps — Preparation of laboratory sheets for the measurement of optical properties
<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">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).</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document is applicable to all wood pulps and to most other types of pulp.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">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.</span></p> <p class="MsoBodyText" style="ms
Status :
Valid
Approval date : 2/28/2023
Number of pages : 20
ICS : 85.040 Pulps
Technical Committee : 221 - Paper, board and pulps
- Replaces SR ISO 3688:2001
- Normative reference SR ISO 3689:1993
- Normative reference SR EN ISO 5263-1:2005
- Normative reference SR EN ISO 5263-2:2005
- Normative reference SR EN ISO 5269-1:2005
- Normative reference SR EN ISO 5269-2:2005
- Normative reference SR EN ISO 7213:2022