Tube Cube Rack McKesson 9 Place 8 to 16 mm Tube Size Blue 3 X 3 X 3 Inch
- Test tube rack holds nine 8 – 16 mm tubes
- 3 x 3 x 3 inch test tube rack not only holds tubes but also cradles their bottoms; the middle section also grasps the tubes at their mid point: Your test tubes will definitely be secure in this rack
- Test tube rack is intended for laboratory use but those who breed monarch butterflies also find them useful to set up milkweed cuttings
