✔ Specifications: Test tube holder rack with 50-holes, suitable for storing 13/16/18mm-diameter test tubes(Choose the right size).The tube holder tray has 3 layers of holes with a smallest hole at the bottom to keeps the tubes perfectly upright and steady.
✔ Assemble & Disassemble: These test tube holder come in a flat-pack arrangement and are easily assembled by sliding each shelf in from the side, into the white endplates, and you can easily disassemble it for compact storage and cleaning.
✔ Wide Applications: Lab tube racks perfect for holding test tube, perfume vials, lip balm, fountain pen and ink samples. Suitable for scientific laboratory, classroom and home use.
✔ Great Material: Lab tube stand is made of strong plastic, lightweight, sturdy and durable. You can see the contents of the test tube easily.
✔ Warranty & Service: 8 hours email reply, 30 days refund and 12 months warranty for quality. Please contact the seller if you have any problems.