Bel-Art Stack Rack PP Test Tube Rack 188601620, For 16-20mm Tubes, 40 Places, White, 1/PK

these sturdy, rigid racks feature interlocking end plates with handles for secure stacking when loaded with tubes up to 10 cm 4 long. Rows are numbered and lettered for easy tube identification. All racks are steam autoclavable at 121c 250f. features: polypropylene racks have white surfaces that make color comparisons easy; sturdy and chemical resistant; will not shatter or stain; top shelf height 7 cm 2-3/4 polycarbonate racks have crystal-clear decks and are perfect for submersing in water baths; top shelf is 7-5/16 cm 2-7/8 high