<b>CBTONE 50 Pack Flat Screw Cap Premium Quality Conical Centrifuge Tubes, 50 mL Self-Standing Tubes Plastic Frozen Test Tubes Vial Seal Cap Container</b><p> <b>Features:</b><br> Free-standing conical design.<br> Highly visible white volume graduations.<br> Low temperature, long - term freezing.<br> Snap cap design,not easy to leak.<br> Ideal for sample handling and storage. <br> Features molded graduations in 2.5mL increments from 5 to 10mL and 5mL increments from 10 to 50mL.<br> Supplied with blue HDPE (high density polyethylene) plug-seal srew caps.<p> <b>Specification:</b><br> Diameter Outside: 25mm / 1.0inch<br> Length: 114mm/4.5inch<br> Closure Color: Blue<br> Capacity: 50ml / 1.69 oz.<br> Material: PP (Polypropylene)<br> Shape: Freestanding with conical bottom<br> Type: Centrifuge Tube