Features 1、Made of polypropylene, smooth wall and good transparency 2、Good sealing cap, samples will not volatilize 3、With 1-10ml calibration, easy reading of the liquid volume 4、Resistance to low temperature, can be frozen for a long time 5、Used in hospitals, epidemic prevention station, schools, scientific research laboratory, etc Specification Description: The test tube is suitable for all kinds of frozen experiment. It can stand and you can use one hand to unscrew the cap, easy and convenient operation. Features: Smooth wall and good transparency. Good sealing cap, samples will not volatilize. With 1-10ml calibration, easy reading of the liquid volume. Resistance to low temperature, can be frozen for a long time. Used in hospitals, epidemic prevention station, schools, scientific research laboratory, etc. Specifications: Height: 95mm / 3.74" Diameter: 15.5mm / 0.61" Volume: 10ml Quantity: 10pcs per bag Materiel: Polypropylene Weight: 53g(approx.) Package Includes: 1 Bag(10pcs) x Test Tubes Note: Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Package List