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5mL tubes take all of the conveniences of standard 1.5mL tubes and scales them up for larger volume and throughput. These screw Cap Tubes are supplied with 20mm (OD) caps that seal smoothly and completely with a single 360° turn. Useful from -86°C to 110°C, they are a valuable resource for boiling and for sample preservation at very low temperatures. Choose from non-sterile bulk packaging with separate caps or gamma sterilized rack packaging. The foam racks are similar to the packaging normally associated with 15mL tubes (upright with caps attached), but they require about 60% less storage space.