Crafted for reliability, these sealed sample vials and mini test tubes with lids offer a great combination of functionality and portability. The clear tube design allows users to observe content changes effortlessly in laboratory settings. Features -Color:Transparent -Material:Glass, iron -Size:7.00X2.80X2.80cm/2.75X1.10X1.10in -Capacity: 30ml -Optimal clarity for lab use: the clear sealed sample vials feature exceptional transparency, enabling precise monitoring of liquid or powdered contents during experiments -Reliable leakproof protection: engineered with advanced sealing technology, these glass vials with caps ensure zero spills, safeguarding valuable samples in leakproof small glass lab vials -Ideal for sampling: each 30 ml tube is perfectly sized for exact measurements, making them indispensable tools for researchers using small clear vials for detailed work -Convenient for travel and fieldwork: lightweight and compact, these test tubes with lids are excellent choices for outdoor sampling -Easy maintenance and longevity: constructed from robust transparent glass tubes, these vials are simple to clean and built to last through repeated uses in various environments Package list: 30 x transparent glass test tube