Wide, external thread screw cap tubes are ideal for traceable storage of tissue samples with a size of 0.5 cm² to 1.0 cm². Each tube has a unique 2D Data-Matrix code laser etched on the bottom and a large human readable code on the side. Store in vapor phase LN2 or use at temperatures up to 100°C. Polypropylene. 15.4 mm W x 33.7 mm H (with caps in place).