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Plastic resin codes symbols

10 plastic resin codes symbols, each with what it looks like and what it actually requires.

Symbol Looks like Means
Resin identification code (the number in a triangle) A small equilateral triangle with a number from 1 to 7 inside it, usually with letters beneath — PET, HDPE, PP. Which plastic the item is made of. It is not a statement that the item is recyclable.
Plastic 1 — PET or PETE (polyethylene terephthalate) A triangle with 1 inside and PET or PETE printed below. Polyethylene terephthalate — clear drinks bottles, salad and fruit punnets, oven-ready trays.
Plastic 2 — HDPE (high-density polyethylene) A triangle with 2 inside and HDPE below. Often an opaque or milky bottle rather than a clear one. High-density polyethylene — milk jugs, detergent and bleach bottles, shampoo, yoghurt drink bottles.
Plastic 3 — PVC or V (polyvinyl chloride) A triangle with 3 inside and PVC or V below. Polyvinyl chloride — pipe, window frames, blister packs, faux leather, garden hose, some cling film.
Plastic 4 — LDPE (low-density polyethylene) A triangle with 4 inside and LDPE below. Usually a film or a squeezable bottle. Low-density polyethylene — carrier bags, bread bags, bubble wrap, squeeze bottles, six-pack rings.
Plastic 5 — PP (polypropylene) A triangle with 5 inside and PP below. Polypropylene — yoghurt pots, margarine tubs, takeaway containers, bottle caps, microwave dishes, kettles.
Plastic 6 — PS (polystyrene) A triangle with 6 inside and PS below. Either rigid and glass-clear, or white expanded foam. Polystyrene — disposable cups and cutlery, meat trays, foam packaging, CD cases, yoghurt pots in some markets.
Plastic 7 — OTHER A triangle with 7 inside and OTHER or O below, sometimes with a further abbreviation such as PC, PLA or ABS. Anything that is not codes 1 to 6 — a catch-all, not a material.
Plastic 7 marked PC — polycarbonate A triangle with 7 inside and PC printed below, often on a hard, glass-clear or amber-tinted item. Polycarbonate — a rigid, transparent, impact-resistant plastic made using bisphenol A.
Plastic 7 marked PLA — polylactic acid A triangle with 7 inside and PLA below, often with a compostable seedling logo alongside. Polylactic acid — a compostable bioplastic made from fermented plant sugars, usually maize.