This is another test tube holder that fit my needs better than what's currently out there. For one, this will fit smaller printers, and also, I only use 3 of the test tubes at once - I don't check PH as often.
Also, I saw someone else design a drying rack and thought it was fantastic, so I incorporated this in the back behind the API card.
Hope someone else can get some use from it - this was my very first design and really couldn't be happier with the result. The 'API' on the side was really just a way for me to learn that aspect and didn't bother duplicating it on the other side.
I printed at .18 with good results
Printer is a Monoprice Mini v2