Tube Rack Insert for Pipette Tip Container.

This simple insert turns your Axygen pipette tip boxes in to sample boxes using a handy insert for 0.6mL centrifuge tubes.  Or you can just use as a stand alone rack.  We use these to more securely store our samples in the fridge and provides a reuse for the pipette tip boxes that accumulate.   

This is a more general redesign of one of my student Justin Farrell's designs that was specific to his experiments.