Our falcon tube is made of high-quality and high-purity polypropylene materials. These containers can be used as a high-pressure kettle test tube, with a maximum speed of 12000 x g. Easy to mark: The plastic centrifugal tube features a designated white area for easy marking and identification. This design also allows for convenient label application. Accurate scale: The scale is printed on the side of the test tube, providing clear and accurate graduations that are easy to read, making measurement convenient for scientific applications. Leak-proof design: The centrifugal test tube comes with a polyethylene cap that ensures a secure seal and prevents leaks. These tubes can be safely stored on shelves and reused multiple times. Sterilization: These large plastic tubes are sterilizable and suitable for various applications involving solids, liquids, powders, seeds, pills, and granular materials. Type: Scientific Conical, 15 mL Color: Transparent & Blue Material: Plastic Package Contents: 50 x Centrifuge Tubes Note: Light reflection and different displays may cause slight variations in the color shown in the picture compared to the actual item. Measurement may vary by +/- 1-3 cm.