Plastic Test Tube Rack, 8 Holes, 16mm, White (Single)

Test Tube Rack, Plastic, 15/18mm, 50 Holes, Karter Scientific 208U2 (Single)

Test Tube Rack - 18mm x 12 Tube Capacity - Polypropylene Plastic - Autoclavable

Test Tube Rack, Plastic, 13mm, 90 Holes, Blue, Karter Scientific 207H2 (Single)

19-Place Honeycomb Hexagonal Test Tube Holder Rack for Tubes, Vials Up To 18mm

Test Tube Rack, Plastic, 13mm, 90 Holes, White, Karter Sci 207D2 (Single)

Test Tube Rack, Plastic, 20mm, 40 Holes, White, Karter Scientific 207M2 (Single)

6-Place Plastic Test Tube Rack, White with 5 test tubes with stoppers