It is a versatile and efficient solution for organizing and storing tubes of various sizes in laboratory settings. With interchangeable inserts for tubes ranging from 10 to 30 mm in diameter, this rack supports tubes from 5 mL to 50 mL. The inserts can be positioned at different heights to accommodate tubes of varying lengths, while the angled design allows comfortable pipetting. The open construction ensures clear visibility of graduation and liquid levels, and the teardrop-shaped wells provide excellent tube stability. Ideal for research and clinical laboratories, this rack enhances workflow efficiency and organization.