Tube sealing clay in two-compartment plastic tray, periphery of each compartment numbered 1 to 24, space beside each number to accommodate 2 tubes, transparent cover secured to tray and clay, o/a dim. Of tray 4.250 in.Lgx3.000 in.Wx0.047 in.Thk, inside dim. Of each compartment 3.500 in.Lgx0.562 in.Wx0.156 in.Deep, usable at 10 to 26 degrees c, light tan colored clay, white tray
