24 well plates
thingiverse
A rehash of existing work isn't suitable for business use, but for personal experimentation, it's probably fine.
Download Model from thingiverse
With this file you will be able to print 24 well plates with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 24 well plates.