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Overview ISO/TS 21139-21:2019 - Permanence and durability of commercial prints - Part 21: In-window display - Light and ozone stability defines a practical test method and data-analysis guidelines fo…
What is ISO/TS 21139 ‑ 21 about? ISO/TS 21139 ‑ 21 describes the test method for light stability and ozone stability for commercial prints, which are displayed in indoor bright places in or near to w…