Eisco Labs Test Tube Rack - Holds 12 Tubes, 18mm Test Tubes - Polypropylene

Polypropylene Test Tube Rack

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

Plastic Test Tube Rack, 12 Holes x 20mm Diameter, White (Single)

Test Tube Rack Set, Plastic, 12/13mm & 15/18mm 50 Holes Karter Sci 208U5 (Pk 2)

Eisco Labs Test Tube Rack, 9 Inch - Polypropylene - Holds 12 Tubes

5Pcs 4 Way Plastic Test Tube Rack Lab Tube Racks Tube Holder Assorted Colors US