Choose 8 oz blue glass bottles in the traditional boston round style with black phenolic cone lined caps to package a range of products. The glass boston round bottles are impermeable and nonporous, preventing any product interaction and helping to maintain freshness. Boston round bottles also feature sloped shoulders and a narrow neck. Blue glass provides adequate UV protection for light sensitive materials. The black phenolic caps include an LDPE cone that fits snugly into the neck of the boston round bottles providing an added layer of sealing while closed.