Rack for Centrifuge Balance Tubes

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This is a versatile holder for all sorts of tubes that we use to balance out our centrifuge's various rotors. It has slots for: 1 - one 50-ml conical centrifuge tube 1 - one 15-ml conical centrifuge tube 1 - one 14-ml round-bottom test tube 2 - two 5-ml round-bottom test tubes 5 - five 1.5-ml microcentrifuge tubes It also has shelves for two 96-well plates and a hook on the back that was designed to hold the rotor-change tool specifically made for the Allegra X-30R Centrifuge. The five shelves fit snugly into this outer rack without needing any extra adhesive, but if they start sliding around, a small dot of superglue should do the trick.