Microtubes are ideal for applications requiring tubes to be incubated, the use of radioactive molecules, or any DNA/protein research where sample integrity is important. Microtubes are autoclavable multiple times and are highly economical for the service they provide, and microtubes are easy to read with graduations at varying amounts in milliliters. Caps can either be screw-on or attached to the microcentrifuge tubes for easy popping on, and even pop-on caps are immune to popping off during intense centrifugation. Available in conical- or flat-bottomed designs.