This 10 mL cobalt blue glass boston round euro dropper bottle has a 18-DIN neck finish. The euro dropper bottle is a type of boston round bottle. Like the boston round, it has rounded shoulders and a rounded base, but it is specifically designed to be fitted with tamper-evident, child-resistant droppers and caps with inverted dropper tips.Glass has high clarity, can be colored, has high chemical-resistance levels, and has extremely high resistance to heat and cold. It is great for storing essential oils. All glass at containerandpackaging.com is lead free. This container is cobalt blue, an electric and vivid blue. In the case of glass, cobalt blue is made by mixing cobalt oxide into the base glass. Plastics are colored by using pigments. This cobalt blue color provides some UV protection for light-sensitive products. This item has an 18-DIN neck finish. The first number refers to the diameter (in mm), and the second refers to the closure depth, style and thread. This container can be paired with a closure with this matching finish, both 18-400 and 18-410
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