#1 PETE or PET (polyethylene terephthalate)–used for most clear beverage bottles, such as 2-liter soda, cooking oil bottles and peanut butter jars. One of the most commonly recycled plastics on the planet.
#2 HDPE (high-density polyethylene)–used to make most milk jugs.
#4 LDPE (low-density polyethylene)–used in food storage bags, some cling wraps and some squeeze bottles.
#5 PP (polypropylene)–used in opaque, hard containers, including some baby bottles and some cups and bowls. Drinking straws and yogurt containers are sometimes made with this.
Avoid These
#3 PVC (polyvinyl chloride)–used in commercial plastic wraps and salad dressing bottles.
#6 PS (polystyrene)–used in Styrofoam cups, meat trays and “clam-shell”-type containers.
#7 Other (these contain any plastic other than those used in #1-6. Most are polycarbonate which contain BPA)–used in some water bottles, Nalgene water bottles, some baby bottles, and some metal can linings.