Hinged Safe-Lock lid prevents accidental lid opening Precise lid sealing for lowest evaporation rates during long-term storage Centrifugation stability prevents tube breaking: up to 30,000 x g for 0.5/1.5mL tubes; up to 25,000 x g for 2.0mL; and 70,000 x g possible in form-fitting rotor Hinged lid allows for easy, contamination-free opening Large, frosted lid and side surface for easy labeling Graduations for easy volume reference Guaranteed functionality between -80° to +100°C Autoclavable when opened (121°C, 20 min.) Choose from six colors, including amber, for light-sensitive samples Also available in batch-certified Eppendorf PCR clean and Biopur™ quality for guaranteed purity Order Info Assorted packages include 100 each of natural, blue, green, red and yellow