These tubes are engineered with a secure locking system that provides the security of a screw cap microtube with the simplicity of a snap cap tube. 

• Maintain sample integrity with locking cap which prevents accidental cap opening and evaporation during contrifugation
• Single-use tubes for laboratory procedures including centrifugation, boiling, incubation, freezing, and sample storage
• Tubes are made from optimally clear USP Class VI medical grade polypropylene
• Tubes feature graduations, writing area, piercable cap, are autoclavable, and are packaged in zip lock, re-closable bags

Manufactured in a class 100000 cleanroom and certified to be free from RNase and DNase, Human DNA, Pyrogens, PCR Inhibitors, and ATP.