The Liberty Scientific USA Blood Roller Mixer is a reliable and efficient laboratory instrument designed for gentle, thorough mixing of blood samples in collection tubes. Featuring 4 rollers with a roller size of 4 inches x 230mm in length, this machine ensures consistent and uniform mixing without causing hemolysis or damaging sensitive samples. Powered by 110V and operating at 20 to 28 RPM, it offers a mixing time of 15 to 30 minutes per cycle and weighs approximately 2.5 lbs, making it compact enough to fit on any lab bench. The unit accommodates up to 6 vacutainer tubes (4 ml) or up to 15 blood collection tubes (3 ml), making it ideal for clinical laboratories, blood banks, and research facilities. The sturdy metal housing, clear safety guard, easy-to-use power switch, and built-in fuse ensure safe and dependable operation. Whether you are processing routine blood work or specialized samples, this blood tube rotator delivers consistent results every time.