The BOD (Biochemical Oxygen Demand) Bottles are designed to measure the oxygen consumption of microorganisms during the decomposition of organic matter in water. These specialized bottles create a stable and inert environment for water samples, ensuring accurate measurements of oxygen depletion. With precise and regulated results, they play a crucial role in water quality and pollution analysis, providing researchers with a non-invasive method of assessing microbial activity. The bottles are equipped with a flared mouth that forms a water seal, preventing air from entering during incubation. Interchangeable stoppers with tapered bottoms also aid in preventing air entrapment. Crafted from durable BOROSILICATE glass, these bottles come with a penny head stopper.