A Test Tube holder for the test tubes in the API master test kit that you use to test your aquarium water.
Holds 4 test tubes and the colour chart.
I made it simple so it's a quick print so it only takes an hour.
Heres a Drying rack i made as well https://www.thingiverse.com/thing:4153699
Test_Tube_Holder.stl | 220.7KB |