특징 Suitable for All Standard Racks and Rotors. 121℃ 내열 Max rotate speed up to 12,000xg for conical bottom tubes, while 6,000xg for self-standing tubes. Long Screw Caps with Sealing Ring Prevent Any Leakage. Easy-To-Read Black Graduation are Accurate to ± 2 % Large Un-erasable Frosting Writing Area. Both the Graduation and Writing Areas are Chloroform-resistant.