The Kimble/Kontes B.O.D. Stopper SNAP-LID is an essential tool for laboratory applications, designed to securely seal biochemical oxygen demand (B.O.D.) bottles. This pack contains 50 durable, high-quality stoppers that provide an airtight seal, preventing contamination and ensuring accurate results. The innovative snap-lid design allows for easy opening and closing, making sample access a breeze. Ideal for environmental testing and research, these stoppers are compatible with standard B.O.D. bottles, enhancing your lab's efficiency and reliability. Upgrade your lab supplies with this practical and dependable solution!