The author remixed this model.
I've added an inch to the main strut to accommodate some of our taller autopipettes and I've made it so that you can fill the base up with something to make it heavier to save on filament instead of printing it solid. I've changed the base by changing the profile a touch and adding custom supports to make it printable without infill.
Instructions:
Download the original files aside from the base and arm https://www.printables.com/model/850013-universal-pipette-stand/fileshttps://www.printables.com/model/850013-universal-pipette-stand/files
Print the base without supports, and then fill the inside in with a funnel, making sure to leave the threading untouched.