While many labs use ball bearings to macerate tissue and release DNA others
find our sharp edged tumble stir elements (VP 711-3,
VP 711D-3, and VP 712-3) were superior.
Several of our customers came to us looking for a more efficient
media to macerate tough plant tissue, especial seeds, to release the DNA.
Smooth steel balls shaken around in a variety of mixers just didn't
provide enough cutting action. We found that the un-deburred tumble stir
elements are very sharp and did a great
job when used in shaker mills or bead beaters. They are inexpensive and can be easily recovered using magnets,
washed and used over and over again.