page last modified
2005-02-22
This arm uses the wrist and gripper assembly, and maneuvers a plastic pipette (which is something like an eyedropper) between different flasks and test tubes to mix solutions with different colors.
The solutions are water and food coloring, and the glassware and pipette are available at chemistry supply stores. Other glassware or plasticware may be used as well, of course, and a large plastic eyedropper may be substituted for the pipette.