Plastic Index

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Plastics are in most everything, from the jars, cups and containers that hold our foods and beverages to the construction materials that make up our houses. The number with the arrows on the bottom of a plastic bottle is the resin identification (recycling) number, which indicates the type of plastic the item was made from. Types of plastic include polyethylene terephthalate (#1: PET, PETE), high-density polyethylene (#2: HDPE), polyvinyl chloride (#3: PVC, vinyl), low-density polyethylene (#4: LDPE), polypropylene (#5: PP), polystyrene (#6: PS), and an "other" category (#7), which may contain more than one resin or a resin not mentioned above. Bisphenol A (BPA) is a chemical used to produce epoxy resins and polycarbonate plastics, which are marked with the number 7.

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