Strong Sealing: Empty Glass vials with self-healing injection ports to ensure sample safety and easy movement and storage of liquids. Secure Snap Cap Design​​: Featuring reliable ​​Snap Cap Vials​​ with airtight seals, these containers prevent leakage and contamination. The innovative closure system creates a hermetic environment ideal for sensitive samples and volatile substances. Easy To Use: Sample storage vials are very easy to use and transport.Sample bottles can store essential oils, blends or other samples to meet your daily needs. Multi-functional Use: Suitable for storing chemical materials,mixed solutions,reconstituted solutions,etc.that require hermetically sealed conditions can also be used for preparations such as mushroom cultures,film and art props,photography and general science.