1/2 oz blue glass bottles in the traditional boston round style are available paired here with black phenolic cone lined caps. The glass boston round bottles are impermeable and nonporous, preventing any product interaction and helping to maintain freshness. These 1/2 oz glass bottles also feature sloped shoulders and a narrow neck. The blue glass bottles provide adequate UV protection for light sensitive components, keeping your products maintained when storing. The black phenolic caps include an LDPE cone that fits snugly into the neck of the amber glass bottles providing an added layer of sealing while closed. Test these blue glass boston round bottles for packaging a wide variety of products.