Bel-Art F18905-0001 Microcentrifuge Tube Ice Rack/Tray; 1.5ml, 50 Places, 9 x 5&frac14; x 2 in., Polypropylene Durable, stackable ice rack designed for heavy duty; holds up to fifty 1.5 ml tubes or tubes with 12 mm dia Durable polypropylene construction offers chemical resistance; the smaller tray is ideal for smaller vessels and tight spaces In addition, the insert can also hold beakers and flasks, and the deep tray is ideal for capturing accidental spills when decanting or pouring liquids from one container to another Trays can also be used for storing hazardous, corrosive chemicals, stains, etc to protect benchtops, shelves and cabinets Made of polypropylene for chemical resistance, durability and steam autoclavable at 121 degree C (250 degree F); 0.5 liter volume