A robust solution for solid or liquid sample storage. Thermo Scientific™ Nunc™ Low-Profile 5.0mL Externally-Threaded Universal Tubes feature 2D barcodes, graduations, a white patch for labeling, recommended working volume of 4.5mL and a wide mouth design for easy addition and extraction of solid sample material like tissue. The externally-threaded design minimizes contamination risk in manual handling procedures. The tubes and rack are rated for storage down to vapor phase liquid nitrogen temperatures. Now available in barcoded rack for more efficient tracking.