GB/T 7973-2003 English PDF

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GB/T 7973-2003: Paper, board and pulps -- Measurement of diffuse reflectance factor (Diff/Geometry)
Status: Valid

GB/T 7973: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7973-2003	159	Add to Cart	3 days	Paper, board and pulps -- Measurement of diffuse reflectance factor (Diff/Geometry)	Valid
GB/T 7973-1987	199	Add to Cart	2 days	Paper board and pulps--Measurement of diffuse reflectance factor (Diff/o-Geometry)	Obsolete

Similar standards

GB/T 6546   GB/T 7979   GB/T 12914   GB/T 2678.6   GB/T 7974   

Basic data

Standard ID: GB/T 7973-2003 (GB/T7973-2003)
Description (Translated English): Paper, board and pulps-Measurement of diffuse reflectance factor(Diff/Geometry)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y30
Classification of International Standard: 85.060
Word Count Estimation: 6,610
Date of Issue: 2003-10-20
Date of Implementation: 2004-06-01
Older Standard (superseded by this standard): GB/T 7973-1987
Quoted Standard: GB/T 450; GB/T 740; GB/T 1543; GB/T 2679.1; GB/T 7974; GB/T 7975; GB/T 10339
Adopted Standard: ISO 2469-1994; NEQ
Regulation (derived from): Chinese national standard approved by the announcement in 2003 No. 14 (No. 62 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies: fixed side of paper, paperboard and pulp operations reflectance factor check the condition, such instruments spectrum, geometric and photometric characteristics and the standard values ??- delivery methods. Diffuse reflectance factor measuring the optical properties can be obtained by the following: pulp, paper and paperboard diffuse blue reflectance factor (Blu-ray brightness), color, light scattering and absorption coefficients and paper opacity. This standard applies to: Determination of paper, paperboard and pulp.

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