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The Association of Postconsumer Plastic Recyclers: PET Barrier Identification and Quantification Test
As long as the solution color is dark red, the solution is useful. The iodide/iodate solution will oxidize with exposure to air and lose the deep red color. Keep the solution closed to the air ... the top of the flake and the edge of the bucket. Add enough IODIDE/IODATE SOLUTION to submerge all flakes. The iodide/iodate solution should be at room temperature. Let flake soak for 30+/- 2 minutes ...
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