DUS 1994: 2018, Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates, First Edition.

来源：epingalert 发布时间：2018-07-13 浏览量：*

通告成员：

Uganda

通告类型：

TBT

通告发布时间：

2018-07-13

评议截止时间：

2018-09-11

通告描述：

This Draft Uganda Standard covers the calculation, from instrumentally measured color coordinates based on daylight illumination, of color tolerances and small color differences between opaque specimens such as painted panels, plastic plaques, or textile swatches. Where it is suspected that the specimens may be metameric, that is, possess different spectral curves though visually alike in color, Practice D4086 should be used to verify instrumental results. The tolerances and differences determined by these procedures are expressed in terms of approximately uniform visual color perception in CIE 1976 CIELAB opponent-color space, CMC tolerance units, CIE94 tolerance units, the DIN99 color difference formula given in DIN 6176, or the new CIEDE2000 color difference units.

文档编号：

G/TBT/N/UGA/876

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ICS Code：

87.040 - Paints and varnishes

HS Code：

3208 - Paints and varnishes, incl. enamels and lacquers, based on synthetic polymers or chemically modified natural polymers, dispersed or dissolved in a non-aqueous medium; solutions of products of subheading 3901 to 3913 in volatile organic solvents, containing > 50% solvent by weight (excl. solutions of collodion)
3209 - Paints and varnishes, incl. enamels and lacquers, based on synthetic polymers or chemically modified natural polymers, dispersed or dissolved in an aqueous medium

通告目的：

Protection of human health or safety (TBT)
Prevention of deceptive practices and consumer protection (TBT)
Harmonization (TBT)

DUS 1994: 2018, Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates, First Edition.

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