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2. Retrobright - Wikipedia

   en.wikipedia.org/wiki/Retrobright

   A simpler but slower process involving merely exposure of the yellowed plastic to bright sunlight has been described, variously called 'Sunbrighting' or 'Lightbrighting'. This has both empirical evidence of effectiveness and the theoretical backing of some published scientific literature , which emphasises exposure to strong visible light while ...

3. Conservation and restoration of plastic objects - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Plastic composites or proprietary blends can be more difficult to identify. If there are no markings to identify the type of plastic used, it may still be identified by using various types of spectroscopic technology such as optical spectrometer, Raman mid-infrared spectroscopy, [4] and near-infrared spectroscopy, along with mass spectrometry. [3]

4. Your black plastic kitchen utensils aren't so toxic after all ...

   www.aol.com/news/black-plastic-kitchen-utensils...

   Instead of humans being potentially exposed to a dose of toxic chemicals in black plastic utensils near the minimum level that the EPA deems a health risk, it's actually about one-tenth of that.

5. Your cool black kitchenware could be slowly poisoning you ...

   www.aol.com/news/cool-black-kitchenware-could...

   Cooking daily with a black plastic product can lead to increased exposure to toxic chemicals over time. Toys with black plastic can be even more harmful to young children, whose bodies are still ...

6. Are your plastic kitchen utensils toxic? An alarming study ...

   www.aol.com/news/maybe-dont-throw-black-plastic...

   An alarming study that had Americans tossing out their black plastic kitchen utensils, toys and to-go packages earlier this month overstated the concern, the researchers admit. But they still say ...

7. Conservation and restoration of lacquerware - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   The conservation and restoration of lacquerware prevents and mitigates deterioration or damage to objects made with lacquer.The two main types of lacquer are Asian, made with sap from the Urushi tree, and European, made with a variety of shellac and natural resins.