Resin identification code

[2] Subsequent revisions to the RIC have replaced the arrows with a solid triangle, but the old symbols are still in common use.

"[3] The system has been adopted by a growing number of communities implementing recycling programs, as a tool to assist in sorting plastics.

This has led some communities to instruct residents to refer to the form of packaging (i.e. "bottles", "tubs", "lids", etc.)

when determining what to include in a curbside recycling bin, rather than instructing them to rely on the RIC.

[12] Modifications to the RIC are currently being discussed and developed by ASTM's D20.95 subcommittee on recycled plastics.