Resin Identification Coding (RIC) system is a set of symbols, which categorizes plastic products into Good and bad for domestic usage, that brings awareness for people via Medical Assistance Program.
The system was originally developed by Society of the Plastic Industry and later administered by ASTM International.
Referring the figure,
Number:#1 inside the triangle represents the plastic is made of PolyEthylene Terephthalate. (PET).
This plastic is safe to use one time and should not be heated.
Number:#2 inside the triangle represents the container is made of High-Density Polyethylene
These plastics can be reused and refilled.
Example: Commonly used for detergent, shampoos containers etc.
Number:#3 inside the triangle, represents to avoid using that plastics immediately. They contain carcinogens (these plastics are made of PVC)
Example: Commonly found in peanut butter jars.
Number:#4 inside the triangle represents commonly used reusable bags especially for shopping.
Example: Grocery store bags, plastic wrap, dry cleaning bags, shopping bags etc.
Number:# 5 inside the triangle is the safest. You’ll find it in straws, ice creams cups and syrup bottles.
Example: Medical storage, food storage
Number:# 6 inside the triangle is dangerous and Number:#7 inside the triangle is deadly. They are made of polystyrene and polycarbonate BISPHENOL A (BPA).
For simpler understanding, 245 codes represents Good resin products and safe,
367 codes are Bad for usage and not safe.