The Glass Beaker Cover is made of glass material, ensuring durability and resistance to high temperatures. Its precise size design allows for easy handling and precise measurements during experiments. The smooth surface treatment not only enhances its aesthetic appeal but also makes it easy to clean, ensuring the purity of experimental results. The tightly fitting beaker cover provides a secure seal, preventing any liquid from spilling out and ensuring the safety of laboratory experiments. The transparent glass allows for clear observation of the experimental process, facilitating accurate data. Features -Color:Transparent -Material:Glass -Size:13.00X13.00X0.30cm/5.11X5.11X0.12in -Made of glass material for use and high temperature resistance. -Precise size design for seamless integration with laboratory equipment and precise measurements. -Smooth surface treatment for effortless cleaning and preservation of experimental integrity. -Securely fitting beaker cover for liquid spill prevention and enhanced laboratory safety. -Transparent glass for clear observation of the experimental process and streamlined data. Package list: 30 glasses