Features: Clear graduated centrifuge tubes with screw caps, you could use white self adhesive labels (PACKAGE NOT INCLUDED) for easy marking and identification. These centrifuge tubes crafted from pp, water resistant, clear scale, not easy to fade or break, long use time. Very suitable for the fields of biochemistry and molecular biology, such as separation and preparation of various biological samples. These centrifuge tubes sample storage containers are reusable, very suitable for loading solid, powder, liquids, oils, pills, and other objects. Widely used for scientific research laboratory, hospitals, classroom, school, also great for organizing small items in the workshop and home. Specifications: Component: PP Color: Transparent Size: Approx. 205x97.8mm/8.07x3.85in Weight: Approx. 320g Package Includes: Package Option Package 1: 25Pieces Centrifuge Tubes Package 2: 1Piece 28-well Storage Holder note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color