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Author Archive | Sarah Sands

A range of test samples exposed to the typical mix of flourescent and indirect window light for the last 30 months.

On the Yellowing of Oils

You would think that we would know more by now; that the questions would be answered, the arguments settled. But we don’t, and they aren’t. Even basic and fundamental issues continue to remain unaddressed by research. Will cold-pressed or alkali-refined linseed oil yellow more? Do historical and traditional processing methods lessen that? How do all […]

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Featured Image for Zinc FAQ

Zinc Oxide: FAQ

FAQs Concerning Zinc Oxide (PW 4) in Oil Paints PDF version: Zinc Oxide FAQ INDEX Zinc Oxide’s Use in the Past When did artists start using Zinc White? Why was Zinc used? What did it offer? Are older paintings containing Zinc Oxide falling apart? Why do some older paintings still look good? How Does Zinc Oxide […]

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Wall of Test Samples That Will Be Shipped in October to Arizona for Accelerated Exterior Lightfastness Testing following ASTM D4303

Lightfastness Testing at Golden Artist Colors

While we often report on results from lightfastness testing, we have rarely paused to actually describe the process we follow. And let’s face it, for most people stating that our tests conform to ASTM D4303, Standard Test Methods for Lightfastness of Colorants Used in Artists’ Materials, does very little to fill in the blanks. In an attempt to solve […]

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