The MTC Bio C2545 5mL Screw-Cap MacroTube takes all of the conveniences of standard 15mL conical tubes and scales them down for space efficiency and decreased natural resource consumption. The C2545 is useful from -86°C to 110°C. These tubes are a valuable resource for boiling and for sample preservation at very low temperatures. Choose from gamma sterilized racked packaging with attached caps or non-sterile bulk packaging with separate caps.