[Good sealing, moisture - and leak -proof] - This test tube with screw lock is equipped with screw caps that can be tightened to prevent spilling from liquid so that they can be used for liquids and foods and good seal.They are moisture and exhaustive and airtight so that you don't have to worry about spilled liquids or moisture. [Suitable for storing lotions] - These test tubes plastic are also perfect for storing lotions and creams and can also store cosmetic samples, lotions, liquids, gels and other beauty fluids.Reaft glasses plastic are small enough to fit in a handbag or backpack and offer a practical solution for . [Transparent plastic reagent glass]-These test tubes are made of transparent plastic, non-, odorless, transparent and leak-proof, you can see the situation inside the test jars very clearly.The screw cap has an aluminum closure that is robust enough for permanent use and keeps its content safe and protected.Plastic test jars are more stable and than glass testing glasses. [Easy to clean and reusable]-This 100 ml scagenous glass with screw cap are easy to clean and reusable.You only have to clean them with a mild cleaning agent and water and you are ready for use.This saves you time and money and makes this test tube with a screw cap with a sustainable solution. [Multifunctional application] - In this test tank plastic you can store small handicrafts such as , diamond points, sequins and pins.You can use them anywhere to store muesli, nuts and pills.Tubes are perfect for filling , almonds, flowers, spices, sweets, swimming salt, salt, bottles, chocolate pieces and more.