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ANT SHACK - Formicarium and Ant Farm Kit Shop | Stackable Test Tube Rack (incl. test tubes & cotton)
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Lily's Home Bamboo Test Tube Vial Shot Glasses Holder Rack, Great as Pen Stand, Made from Bamboo with Built-in Handle, Rack Only, Glass Tubes NOT Included, 6 Tube Capacity (7/8" (22mm') Holes):
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uxcell Wooden Test Tube Holder Rack 6 Wells for 100ml Centrifuge Tubes: Amazon.com: Industrial & Scientific
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