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Centrifuge Tube Rack holds 15 conical bottom 15mL tubes, Each
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Z Shaped Stainless Steel Test Tube Rack Holder Display Stand Three Tier with 25 Holes, Test Tube Holder Storage Sorting Lab Stand, For 16mm Diameter
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16mm Diam x 48 Holes Stainless Steel Test Tube Rack Holder Storage Lab Stand
Monster Rack 120 Tube Mega Test Tube Racks, 13-16mm Tubes
Nalgene® 5970-0520 Test Tube Rack, Autoclavable, Red, 20mm tubes
Acrylic Test Tube Rack Holder Non-toxic 16mm 6 holes Centrifuge