Tube rack for wet lab

Depending on the chemicals you work with, the rack can be printed in different materials. PP will give perfect chemical resistance against most solvents, but is harder to print. PLA cannot resist chloroform but is ok with most other solvents. I added some solvent compatibility resources to check (For PLA you could check the book Poly(Lactic Acid) ISBN 9780470649848).

We used these tube models (https://www.printables.com/model/412386-test-tube-models) to carve out the tube cavities.