2 oz clear PET plastic boston round bottle with 20-410 neck finish.
Characteristic of the boston round are its rounded shoulders and rounded base. Polyethylene terephthalate (PET) is marked with the resin identification code of 1. PET is of the polyester family and has high clarity, good chemical resistance, high impact resistance, and medium rigidity. PET is also light-weight and is used for products containing essential oils. Avoid using PET containers to store products that contain essential oils greater than 5% or fragrance oils greater than 15%. If your oil percentages exceed these respective levels, please consider using glass.
20-410 is the size of the opening for this container. Please look for lids/caps/pumps with this same number (20-410) for matching closures.