Ind. Code § 13-20-19-2
Each bottle and plastic container described in section 1 of this chapter must be coded. The coding must consist of a three (3) sided triangular arrow with a number in the center and letters underneath. The number and letters must indicate the resin from which the container is made as follows:
(7) Seven (7) and "Other" for other materials, including multi-layer materials.
[Pre-1996 Recodification Citation: 13-7-22-1(b).]
As added by P.L.1-1996, SEC.10.