These stackable racks are ideal for everyday lab use and transport. Retainer fingers within each well hold tubes firmly in any position. They are ideal for decanting and use in a water bath. They will sink in a water bath and maintain stability even in agitated water and the perforated base allows it to drain immediately upon removal. The racks ship flat and assemble quickly. Outside dimensions fit most automated sampling equipment, 248 x 105 x 70mm high (9 3/4" x 4 1/8" x 2 3/4"). With rugged polypropylene construction these racks are available to hold 3 popular tube diameters. The end plates accept labeling and each well is numbered and lettered for sample identification. Racks available in white only.