96 well plate / 0.2 mL strip tube Magnet Rack
by acadey, published
This is a magnet holder for magnetic bead separation for either a 96 well plate - or a 96 well plate with the wells cut out can be taped on top to hold 8 tube strips. Here are the magnets: http://www.kjmagnetics.com/proddetail.asp?prod=BZ082. I added a struts design that can be printed and used to hold the tops of the magnets in place while the epoxy sets. Make sure they are not in contact with the epoxy while it sets! I also added a version that holds the magnets a little more snugly that helps with setting the magnets.
NOTE: The first prototypes pull beads ~25-30% slower than commercial versions - also they require more care when removing the super. This I believe is due to the depth of the magnets and I am working up a new model that uses different sized magnets that may work better.
Also if you are a grad student and are trying to convince your PI to buy a 3D printer - making just two of these will pay for the printer. These things are ridiculously overpriced.
UPDATE: Added a version for smaller square magnets. Will add more details soon, but hopefully this will allow the beads to be pulled higher on the tube. Also the magnets are a pain to glue in place - I am going to try a much faster drying glue and hopefully that will work...