• Can be safely stored in freezers down to -112°F (-80°C)
• Caps with recessed lid and sealing ring prevent leaking
• Safely withstands temperatures down to -80°C
• Disposable polypropylene tubes are autoclavable to 250°F (121°C)

Easy-to-read black graduations offer accurate reading to ±2%; the 15-mL tubes feature increments of 0.5 mL while the 50-mL tubes have increments of 2.5 mL. Frosted writing surface allows for permanent identification and labeling. Tubes are offered in either non-sterilized or sterilized versions, are nonpyrogenic, and certified RNase-, DNase- and DNA-free. These tubes are sterilized with gamma irradiation and packaged in 25 tubes per resealable bag for a total of 500 per case.