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Labacus - the lab abacus
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Model information
- Source
- Printables
- Category
- Chemistry & Biology
- License
- Creative Commons — Attribution
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.