Sec. 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:
(1) One (1) and "PETE" for polyethylene terephthalate.
(2) Two (2) and "HDPE" for high density polyethylene.
(3) Three (3) and "V" for vinyl.
(4) Four (4) and "LDPE" for low density polyethylene.
(5) Five (5) and "PP" for polypropylene.
(6) Six (6) and "PS" for polystyrene.
(7) Seven (7) and "Other" for other materials, including multi-layer materials.