United Scientific® Test Tube Rack, PC, 25mm Tubes, 18 Places, White With Clear Tiers-UNITED 77809

These polycarbonate racks with a 3-tier design provide clear view of the tube contents and convenient insertion and removal of tubes. Upper and middle plates are transparent. Beveled holes on bottom plate provide stability to standing tubes. Racks are autoclavable and can withstand sub-freezing temperatures. Available in 12-tube and 18-tube configurations, each able to hold tubes up to 25 mm in diameter.