Triple-Pure 3.0mm diameter zirconium (ceramic) beads are suitable for homogenization of f a variety of tissues including heart, lung, and brain, plant tissues, insects and dried samples. Beads are acid washed and heat treated and certified to be nuclease and protease free and filled in bottles in a process tested by qPCR to be free of stray DNA. Can be used with any bead homogenizer. 300g bottle.