Review on 🔬 Karter Scientific 208U2: High-Quality Detachable Plastic Labware for Effective Research by Radney Taala

Very good for holding (up to 50) empty lip balm tubes upright so they can be refilled. It also makes it easy to collect them all at once and pop them in the fridge so they harden faster. Thanks to whoever first discovered you could use bottle holders for lip balm tubes. It's easy to assemble: you glue the blue layers into the white sides. Of course you can take it apart again if you want to clean or store it. The holes in the top two layers are 11/16 in diameter, and the distance from the bottom layer to the top is just under 2 inches. Because the holder is strong enough with just two layers, you can remove the top layer to accommodate something shorter, or rearrange the layers as you see fit.