#1 PETE or PET (NOT SAFE due to antimony leaching)
Polyethylene terephthalate

#2 HDPE (SAFE)
High density polyethylene

#3 PVC or V (NOT SAFE due to phthalates)
Polyvinyl chloride

#4 LDPE (SAFE)
Low density polyethylene

#5 PP (SAFE)
Polypropylene

#6 PS (NOT SAFE for hot liquids, alcohol or fatty foods due to styrene)
Polystyrene

#7 plastics including polycarbonates that contain bisphenol A (BPA) (NOT SAFE due to BPA)
Polycarbonate