YS/T 469-2004 Active Industry standards-Non-ferrous metals

YS/T 469-2004 Determination of whiteness of alumina and aluminum hydroxide

Publish Date: 2004-06-17 Implement Date: 2004-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: YS/T 469-2004

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: \nTest methods for the physical properties of metals

ICS Name: -

Publish Date: 2004-06-17

Implement Date: 2004-11-01

Pages: 7 pages

Scope

This standard specifies the method for determining the blue light whiteness of alumina, aluminum hydroxide, and their chemical products under the standard illuminant D65 and the optical geometries of diffuse/vertical (d/0) or vertical/diffuse (0/d). This standard applies to the determination of the whiteness index of alumina, aluminum hydroxide, and their chemical products. The measurement range is WB70~99.9.

Development Information

Word Count: 11 Thousand words Pages: 7 pages

Referenced Standards

GB/T 3979-1997 Methods of measuring the color of materials GB/T 3977-1997 Methods of color specification GB/T 3977-2008 Specification of colors GB/T 3978-1994 Standard illuminants and illuminating—viewing conditions GB/T 3978-2008 Standard illuminants and geometric conditions GB/T 5698-2001 Glossary of color terms GB/T 6609.22-2004 Chemical analysis methods and determination of physical performance of alumina—Sampling GB/T 6609.23-2004 Chemical analysis methods and determination of physical performance of alumina—Preparation and storage of test samples GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9087-1988 The white powdered standard piate for colorimetry and photometry GB/T 17749-1999 Methods of whiteness specification GB/T 17749-2008 Methods of whiteness specification JJG 512-2002 Whiteness Meter JJG 512-2021 Whiteness Meters

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