Color Calculation Standard E3415

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Color Calculation Standard E3415

September 4, 2025
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New Standard Will Aid in Color Calculation of Objects

ASTM Committee E12 on Color and Appearance


According to ASTM member Hugh Fairman, legacy standard E308 gathered data and pre-calculated weight sets for doing what is called “tristimulus integration,” which determines the actual color of a measured spectral reflectance or spectral power curve. While this standard is still useful in certain cases, a need has grown for the more updated practice described in E3415 to respond to interest in how illumination is perceived on painted surfaces.

Standards Michigan: ASTM International

Related:

A RAL number is part of a standardized color matching system developed by the RAL Deutsches Institut für Gütesicherung und Kennzeichnung (German Institute for Quality Assurance and Certification) used primarily in Europe. It is widely used for defining colors for paint, coatings, and plastics.

Powell

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Standards Michigan Upper Peninsula

The Finnish presence in Northern Michigan stems from mass immigration during the late 19th and early 20th centuries. Between 1870 and 1929, over 350,000 Finns arrived in the U.S., with Michigan drawing about 40% due to its copper and iron mines, lumber mills, and farms.

Recruited from Norway’s mines starting in 1864, they settled in towns like Hancock, Calumet, Ishpeming, and Ironwood, drawn by the region’s harsh winters, long summer days, and forested terrain mirroring Finland’s.

By 1930, nearly 75,000 Finnish descendants lived there, forming the largest ethnic group in five northwestern UP counties (35% Finnish heritage per recent census). They built saunas, cooperatives, and Lutheran churches, including the Suomi Synod (1890) and Finlandia University (1896, since closed).

Cultural festivals like Heikinpäivä and pasties (adapted from Cornish miners) endure, sustaining a “Sauna Belt” legacy amid mining booms that rivaled California’s Gold Rush.

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