Securely store samples at low temperatures, including vapor phase Liquid Nitrogen with Thermo Scientific™ Matrix™ 0.5mL ScrewTop Tubes in barcoded latch racks. Tubes are molded from medical grade resins and feature a permanent, high contrast 2D barcode. These tubes are packed in our Barcoded Latch Racks that feature a linear barcode, 2D barcode and human readable rack identification on three sides of the rack. Use in combination with Thermo Scientific barcode readers, arrayers and capping equipment. The 2D screwtop tubes meet a range of manual and automated long term storage needs; barcoded racks make it easy to track the rack as well.