Brightness of pulp, paper, and paperboard (directional reflectance at 457 nm)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

26-10-2023

Publisher

Technical Association of the Pulp & Paper Industry

This method provides: (a) a scale for measurement of blue directional reflectance factor, (b) a method for verifyingthe calibration of each instrument used for reflectance testing so that the user can rely upon the test results, and (c) a means for determining the fluorescent component of brightness.

This method is for the determination of the brightness of white, near white, and naturally colored pulp, paper, and paperboard. Brightness is a commonly used industry term for the numerical value of the reflectance factor of a sample with respect to blue light of specific spectral and geometric characteristics.

DocumentType	Test Method
Pages	9
PublisherName	Technical Association of the Pulp & Paper Industry
Status	Current
Supersedes	TAPPI T 452 om : 2018

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ANSI/TAPPI T 452:2023

Brightness of pulp, paper, and paperboard (directional reflectance at 457 nm)

Abstract

Scope

General Product Information

Category

Subcategory