Paper, board and pulps. Measurement of diffuse blue reflectance factor Outdoor daylight conditions (D65 brightness)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-11-2009

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling and conditioning
7 Preparation of test pieces
8 Procedure
9 Expression of results
10 Precision
11 Test report
Annex A (normative) - Spectral characteristics of
instruments for measuring D65
brightness
Bibliography

Describes a method for measuring the D65 brightness of pulps, papers and boards.

This part of ISO2470 specifies a method for measuring the D65 brightness of pulps, papers and boards.

This part of ISO2470 is limited in its scope to white and near-white pulps, papers and boards, particularly those exhibiting fluorescence which promotes the appearance of whiteness. The measurement can only be made in an instrument in which the ultraviolet energy level of the illumination has been adjusted to correspond to the CIE standard illuminant D65 using a fluorescent reference standard.

The source employed in this part of ISO2470 excites almost twice as much fluorescence as the illuminant in ISO2470-1. Consequently, this part of ISO2470 is better suited for measuring the fluorescent contribution to the brightness. However, D65 brightness should not be confused with ISO brightness which closely approximates the brightness of papers viewed under indoor conditions.

NOTE The property called ISO brightness is measured with an instrument adjusted to a much lower UV content than that specified in this part of ISO2470. The measurement of ISO brightness is described in ISO2470-1.

Committee	PAI/11
DevelopmentNote	Supersedes 07/30164319 DC. (11/2009)
DocumentType	Standard
Pages	18
PublisherName	British Standards Institution
Status	Current
Supersedes	07/30164319 DC : 0

Standards	Relationship
ISO 2470-2:2008	Identical

ISO 4094:2005	Paper, board and pulps International calibration of testing apparatus Nomination and acceptance of standardizing and authorized laboratories
ISO 11476:2016	Paper and board Determination of CIE whiteness, C/2 (indoor illumination conditions)
ISO 187:1990	Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
ISO 2470-1:2016	Paper, board and pulps Measurement of diffuse blue reflectance factor Part 1: Indoor daylight conditions (ISO brightness)
ISO 186:2002	Paper and board — Sampling to determine average quality
ISO 11475:2017	Paper and board — Determination of CIE whiteness, D65/10 degrees (outdoor daylight)
ISO 10526:2007	CIE standard illuminants for colorimetry
ISO 2469:2014	Paper, board and pulps — Measurement of diffuse radiance factor (diffuse reflectance factor)
ISO 3688:1999	Pulps — Preparation of laboratory sheets for the measurement of diffuse blue reflectance factor (ISO brightness)
ISO 7213:1981	Pulps Sampling for testing

View more information

£134.00

Excluding VAT

Product format

I agree to the DRM document license rules apply against the PDF selection made.

Please confirm that you agree to the document license rules for this document.

I agree to the document license rules .

Please confirm that you agree to the document license rules for this document.

Access your standards online with a subscription

Features

Simple online access to standards, technical information and regulations.
Critical updates of standards and customisable alerts and notifications.
Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

Get in touch with us

Log into your Account

BS ISO 2470-2:2008

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

Access your standards online with a subscription