Polypropylene rack is used for incubating tubes in water or ice baths. Will float with a full load of filled tubes. Tubes are supported below the lip and rack legs prevent tube bases from touching the bench surface. Temperature resistance from –70 to 100°C. Racks accommodate 16 tubes in a 4 x 4 array. White racks hold 1.5 ml microtubes or 1.2 and 2.0 ml cryovials. Black racks hold 0.5 ml microtubes. Dimensions: 103 x 103 x 65 mm.