Resin Identification Codes Explained
A guide to the resin identification codes 1–7 and what each means for recycling and material selection.
Resin Identification Codes Explained
This guide explains the resin identification codes — PET (1), HDPE (2), PVC (3), LDPE (4), PP (5), PS (6) and Other (7) — and how they relate to sorting, recyclability and material choice.
How we handle it, step by step
Map each code 1–7 to its polymer.
Note how each behaves in recycling streams.
Use codes to support correct segregation.
Relate codes to material choices.
Your deliverables
Resin Identification Codes Explained — questions we get
What does code 7 mean?
Code 7 is “Other”, covering polymers such as ABS, polycarbonate and multi-material items not in codes 1–6.
Does a code mean it is recyclable locally?
The code identifies the polymer; actual recyclability depends on local collection and processing capability.
Keep exploring Recycled Polymer
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