Parametric Magnetic Separator Rack for 0.2mL tubes

Magnetic separator rack for 0.2mL tubes, can be configured to the number of rows and columns required


Creative Commons Attribution Noncommercial Share Alike

Commercial use is not allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags


I was introduced to SPRI bead cleanup by Ethan Ford when doing NGS library preps and found it a really easy way to clean up many small volumes of DNA relatively easily and quickly. With the protocol for homebrew beads Ethan had, it was also a very cost effective method to purify PCR fragments and elute them in tiny volumes that were problematic with columns I was using.
Given I had leftover beads from my NGS preps, I set out to print myself a separator rack which seems to be merely a magnet that cost hundreds of dollars.

Due to me being a cheapskate this rack is not designed to fit typical 96well plates or strip-tubes. The spacing between tubes is designed to place them at the interface between the cheap 5mm Neodymium magnets I found on ebay for 10cent each. This seems to concentrate the magnetic flux there or something but makes the beads clump nice and tight in the tubes.

Materials and methods

Non printed parts required:
10x5x3mm N50 Neodymium Magnets (n-1 required for each row, where n is number of tubes)

Print model, insert magnets, done!



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


19058bd73fcdd07df955f84cb1c47e37?default=blank&size=40sapimen added this to the teste collection ago
8cb3c4ed489174618d3c90e4f63e9b83?default=blank&size=40Fogcitycory added this to the Slot Cars collection ago
722b9108c8077e2e4fff711fbb495bce?default=blank&size=40k2e2ni published this design ago