For parts or not working. We fully tested this unit with our Matrix Wellmate and it mostly worked. The sensor for the unused microplates was out of adjustment and would throw an E105 error. This was remedied by lifting the chimney up about a mm. The sliding tray seemed to drag a little bit on it's way to the dropper resulting in misalignment for the droppers as well as the return chimney. We couldn't tell if this was a simple fitment issue or a symptom of a larger problem. About 20% of the time it worked perfectly.

This stacker is missing two feet and a chimney support bar.