The Monarch Microfuge Tube EcoRack is a reversible benchtop tube rack made from plastic recovered during the manufacture of Monarch Nucleic Acid Purification Columns. Plastic that would otherwise be discarded during the injection molding process is recovered and remolded into this useful lab accessory that can hold up to 48 tubes. One side can accommodate tubes 1.5-2 mls and the other can accommodate 0.5 ml tubes. The tube racks are sold in packs of 2.