We love a good organizationally-motivated print like this one by mogg851 up on Thingiverse.
API Master Test Kit is great, but balancing test tubes and keeping organized isn’t so easy with what is provided. This stand sits on top of the existing test kit and lid, provides easy to read labeled stands for adding water, testing solution drops, waiting for reactions to take place, and provides a drying rack holding the tubes upside down to drip dry and stay clean. Store and dry your test tube caps as well.
