80 or 96 Place Laboratory Plastic Vial Test Tube Rack Holder 8mm or 11mm

8-Place Test Tube Rack 13 mm Holder | Lab Vial Tube Organizer – Made in USA

5 Slot Test Tube Holder Rack 20mm Vial Stand – Durable Lab Organizer Made in USA

29 or 80 Place Round Hole Flipper 4-Way Test Tube Holder Rack Vials up to 28mm

6/8/10/12 Holes Wooden Test Tube Stand Laboratory Test Tube Support Rack Shelf.

Vintage Wooden Test Tube Rack 10 Hole Lab Storage Display Holder Brown Wood

5 Pcs Test Tube Holder Lab Stand Rack 4 Way Plastic Lab Tube Racks Colorful US

6 Pack Plastic Test Tube Holder 50 Hole Blue Stand 13/16mm Laboratory Rack