Labacus - the lab abacus

This model is designed to solve the problem of losing track of steps in a lab protocol. Simply slide a bead from left to right when it is complete. The number of beads, and the colour of them, is entirely up to you. I use orange to indicate that the final step (in my protocol) needs a longer centrifugation run.

The rod is a 5mm x 200mm stainless steel rod I found on Amazon.

The end points attach to metal panels on the wall of my lab, using magnets. The magnets are 12x3mm, also from Amazon. Two are used per endpoint.