Martian Geology Large Test Tube Holder

For your classroom or research laboratory! A Martian Geology holder stand for large test tubes. Great for rock and sediment samples.

Supports should not be needed. Print two of the side support pieces (joiner), one of the upper and one of the bottom.

Test tube size: This holder fits the Baby Soda Bottle Test Tube similar to these ones on Amazon

Update 7/6/24: Added a version two of the upper part of the test tube holder that is slightly wider to allow a small tolerance for sticker labels on the tubes. The original version of the upper piece made it hard to remove the tubes if they had labels.  Filename: “Martian Geology Upper_v2”.