These are great for making homemade chapsticks, storing ink samples, test tubes, lip balm, great for holding small cylinders upright
Suitable for test tubes with an OD ranging from 15mm to 18mm
The test tube rack are made of laboratory grade polystyrene, durable and light weight, easy to carry, not autoclavable
The test tube has 3 Layer, 2 slots, each layer has a direction, slide the shelves in from one side, the other side has a lip that stops it, fits very snug. The stand has three layers of holes with a smallest hole at the bottom to keep tubes steady, and the large holes on the second and the top floor
