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  • BS 4432-3:1980

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Methods for determining optical properties of pulp, paper and board Determination of opacity (paper backing) of paper and board by the diffuse reflectance method

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-11-1998

    Language(s):  English

    Published date:  30-06-1980

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Cooperating organizations
    Method
    0. Introduction
    1. Scope and field of application
    2. Definitions
    3. Apparatus
    4. Sampling
    5. Preparation of test pieces
    6. Procedure
    7. Expression of results
    10. Test report
    Annex
    General information on ISO brightness and reflectance
    factor standards for papers, boards and pulps
    Bibliography

    Abstract - (Show below) - (Hide below)

    Applies to white or near-white papers and boards. Those treated with a fluorescent dyestuff or exhibiting significant fluorescence may be measured, but the agreement between values obtained with different instruments may be unsatisfactory and the meaning of the results may be difficult to assess.

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 4432-1:1995 Methods for determining optical properties of pulp, paper and board Measurement of diffuse reflectance factor of paper, board and pulps
    BS 4657:1990 Method for determining the resolution obtained in microcopying
    BS 6616:1986 Specification for paper and print for optical character recognition (OCR)
    BS 4448:1988 Specification for school exercise books and papers
    BS 7344:1990 Specification for reeled low density polyethylene film for general purpose application
    BS 3203:1979 Glossary of paper, board, pulp and related terms
    BS 5916(1989) : AMD 7808 SPECIFICATION FOR UNITS FOR EXPRESSING PROPERTIES OF PAPER BOARD AND PULPS

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 2471:2008 Paper and board — Determination of opacity (paper backing) — Diffuse reflectance method
    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 2470:1999 Paper, board and pulps Measurement of diffuse blue reflectance factor (ISO brightness)
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