Preserve the Integrity of Your Solutions: These caps are specifically designed for 3ml glass vials typically used for s, ensuring that once opened, the contents remain sterile and protected from contaminants. This feature is crucial for maintaining the efficacy of the liquid and reducing waste by preserving portions. Enhanced Seal for Maximum Protection: Each cap provides a secure, leak- seal that prevents evaporation and contamination. The snug fit ensures that the contents are safeguarded against external elements, making these caps ideal for long-term storage of sensitive liquids in professional or personal settings. Organizational Efficiency with Color-Coding: This set includes 12 caps in 6 vibrant colors, providing an efficient system for organizing and identifying different substances or medications quickly. Two caps of each color allow for easy categorization and retrieval, enhancing workflow and reducing the risk of errors. and Reusable Design: Crafted from materials, these caps are built to last and can be reused multiple times. They are easy to clean-simply rinse with water after each use. This not only makes them environmentally friendly but also cost-effective for users who require sterile conditions regularly. Versatile Application Across : Ideal for use in laboratories, clinics, research facilities, and even for DIY projects or home organization. These caps fit 3ml vials used for s, making them a universal solution for anyone needing reliable vial storage. Color: Multicolor Material: Silicone Package Contents: 12 x Lid Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.