Marketlab Half-Size Epoxy Wire Racks provide compact, durable tube storage and benchtop organization in diagnostic and research laboratories. Heavy-gauge steel wire wrapped in a protective, fluid-proof epoxy coating makes these racks resistant to organic solvents, salts, weak acids, and alkalis. Featuring a 40-place grid array (4 x 10 pattern) designed specifically for 15 mm to 16 mm diameter test tubes, blood collection tubes, and centrifuge tubes, these half-size racks withstand temperatures from -40°C deep freezing up to 121°C autoclaving.