The Function of Rubber Stoppers:

Rubber stoppers serve a dual function in blood collection tubes. Firstly, they create an airtight seal, preventing the escape of blood or introduction of contaminants. This seal is essential for maintaining sample integrity during transportation and storage, ensuring that the blood remains suitable for analysis even after prolonged periods. Secondly, rubber stoppers provide a puncture site for needles during blood collection, allowing for efficient and sterile specimen retrieval.

Rubber stoppers for blood collection tubes are typically made from synthetic materials such as synthetic rubber or silicone elastomers. These materials offer flexibility, resilience, and biocompatibility, making them ideal for medical applications. The design of rubber stoppers may vary depending on the specific requirements of blood collection tubes. Some stoppers feature a central septum designed for repeated needle punctures, allowing for multiple sample withdrawals without compromising the seal.