File:Silver-tarnish-sulfur-pollutants-plastic-ID-tool.jpeg
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Metals. Corrosion caused by air pollutants. Comments: Sulfur in the air and from silk degradation products caused dark tarnish on silver knives. Image credit: Photograph by van Aubel van Rooijen, Plastic Identification Tool. Permission given on 9/15/2020 from van Aubel van Rooijen via email to sspringer.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:26, 23 September 2020 | | 1,920 × 1,080 (852 KB) | Sspringer (talk | contribs) | Metals. Corrosion caused by air pollutants. Comments: Sulfur in the air and from silk degradation products caused dark tarnish on silver knives. Image credit: Photograph by van Aubel van Rooijen, Plastic Identification Tool. Permission given on 9/15/20... |
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