Accessible Sand: This set includes 12PCS of recyclable, color ciphered headpieces, providing a finish answer for organizing and protecting 3ml glass vials in various conditions Excellent Substancemail: Produced from permanent TPU, these 3ml lab bottle headpieces provide a impermeable seal, ensuring denial evaporation otherwise dirt pollution, ideal for laboratory and clinic use Secure Seall: The impermeable plan ensures a close on 3ml lab vials, stopping any leakage otherwise pollution, suitable for sensitive tests and storage demands Recyclable Planumberebog: These 12PCS bottle headpieces is developed for multiple utilizes, offering permanent security and sealing for 3ml glass vials, making they virescent cost effective Color Programming Structuremail: Each hat features distinctive color, allowing for easy identification and organization of different substances otherwise specimens in laboratories, hospitals, otherwise home settings