AS NZS 1301.466s-2005 PDF

Full title and description

AS/NZS 1301.466S:2005 — Methods of test for pulp and paper — Preparation of laboratory sheets for the measurement of diffuse blue reflectance factor (ISO brightness). This document specifies the procedure for preparing laboratory handsheets used when measuring diffuse blue reflectance factor (commonly referred to as ISO brightness) of pulps, papers and paperboard.

Abstract

This adoption of the ISO method provides the required procedures for forming, pressing, drying and conditioning laboratory sheets (handsheets) so that measurements of diffuse blue reflectance factor (ISO brightness) are comparable and reproducible between laboratories. The standard aligns national practice with the corresponding ISO methodology to support consistent optical property testing of pulp and paper materials.

General information

• Status: Current (reconfirmed in 2020 for continued use).
• Publication date: 3 June 2005 (first edition).
• Publisher: Standards Australia / Standards New Zealand (joint adoption).
• ICS / categories: Paper technology — Pulps and paper (ICS 85.040 / 85.060).
• Edition / version: 1st edition (AS/NZS adoption, 2005).
• Number of pages: 5 pages (concise method specification typical of “S”/supplementary methods series).

Scope

Specifies the method for preparation of laboratory sheets (handsheets) intended for subsequent measurement of diffuse blue reflectance factor (ISO brightness). The standard addresses handsheet formation, pressing, drying and conditioning so that optical measurements of pulp, paper and paperboard are performed on comparable specimens. It is an adoption of the relevant ISO method (ISO 3688 series) and is intended for use where laboratory-prepared sheets are required for optical testing rather than measurements on commercial production sheets.

Key topics and requirements

• Requirements for forming laboratory sheets (handsheet equipment and procedure).
• Pressing and drying conditions to ensure consistent sheet structure and moisture state.
• Conditioning and storage before optical testing to control moisture and physical state.
• Specimen preparation and handling to avoid contamination or surface alteration prior to brightness measurement.
• Links to the ISO brightness measurement methodology (ensures compatibility with ISO 3688 family).

Typical use and users

Used by pulp and paper testing laboratories, quality assurance and R&D departments of pulp and paper manufacturers, test laboratories performing comparisons with international data, standards bodies and academic researchers working on optical properties of pulp and paper. The standard is applied when handsheet preparation is required to produce specimens for brightness/optical property measurements that must be comparable across laboratories.

Related standards

Part of the AS/NZS 1301 series (Methods of test for pulp and paper). Closely related documents include AS/NZS 1301.462S (measurement of diffuse blue reflectance factor / ISO brightness), AS/NZS 1301.464S (equipment for diffuse reflectance measurement) and other handsheet preparation and testing protocols; internationally it corresponds to the ISO 3688 family (earlier editions ISO 3688:1999 and later revisions such as ISO 3688:2022 for related content).

Keywords

handsheet, laboratory sheet, preparation, ISO brightness, diffuse blue reflectance factor, pulp, paper, paperboard, optical properties, AS/NZS 1301

FAQ

Q: What is this standard?

A: AS/NZS 1301.466S:2005 is a joint Australia/New Zealand standard that specifies how to prepare laboratory handsheets for measurement of diffuse blue reflectance factor (ISO brightness) of pulps, papers and paperboard.

Q: What does it cover?

A: It covers the procedure for forming, pressing, drying and conditioning laboratory sheets so that brightness (diffuse blue reflectance factor) measurements are reproducible and comparable with the referenced ISO method.

Q: Who typically uses it?

A: Test laboratories, quality control and R&D groups in pulp and paper manufacturing, standards organizations and academic researchers concerned with optical testing of paper and pulp products.

Q: Is it current or superseded?

A: The 2005 AS/NZS 1301.466S edition was reconfirmed in 2020 and is published as current in joint catalogues; users should check national catalogues for any later amendments or revisions and note that related ISO documents have been updated (ISO 3688 has later editions addressing related procedures).

Q: Is it part of a series?

A: Yes — it is part of the AS/NZS 1301 series “Methods of test for pulp and paper,” a set of standards covering equipment, specimen preparation and measurement methods for optical and physical tests on pulp, paper and paperboard.

Q: What are the key keywords?

A: Handsheet, laboratory sheet, ISO brightness, diffuse blue reflectance factor, pulp, paper, preparation, optical properties, AS/NZS 1301.