VINTAGE 20-Hole Stainless Steel Test Tube Rack , MARKED 1-10, 3 layer

8 Hole 3 Layers Test Tube Holder for 26-30mm Tube Lab Stand Rack Stainless Steel

Plastic Test Tube Rack 60 Holes Holder Storage Stand Lab 3-Layers 16mm Holes

Plastic Test Tube Rack for 15/18 Mm Tubes, Hole Diameter Is 18.7Mm, Holds 50, De

Blue 3 Layer Plastic Test Tube Rack Stable and Portable Organizers for Lab Use

3 Pack Plastic Test Tube Rack 4 Way, Assorted Colors Blue Orange Yellow Lab Tool

Plastic Test Tube Rack 60 Holes Storage Holder Lab Stand 3 Layers 16mm Hole

4-Way Plastic Test Tube Rack Assorted Colors for Laboratory Use (one only)