Tube holder designed for use with Illumina's CFTR 139-variant panel on a liquid handler robot. Good for 56-plex worth of combinatorial indexes.

Designed in Tinkercad. Tinker yourself to edit/remix: https://www.tinkercad.com/things/bLTE6O9FF2N

Drill out each hole with a 1/4" bit for a perfect fit of Illumina's index tubes.

Optional: if printing rack with labels, can fill with colored UV-active resin or other filler