Our 4 ounce amber glass Boston round bottle is great for essential oils, perfumes, room sprays, lotions, massage oils and more. The amber color meets the USP XXI requirements for light transmission, Type III and NP Chemical Resistance Tests; which provides UV protection to help your product last longer. Certificate of Analysis can be provided request. This bottle has a 22-400 finish; which can be paired with any of our matching items below to get the best functionatily of this bottle for your specific use.