Prefilled 2ml tubes contain one 6mm diameter banded zirconium (ceramic) satellite. Tubes are ready to use -- beads are acid-washed and heat-treated to remove contaminants and render them nuclease and protease free. Suitable for homogenization of tough tissues, seeds, hair, and dried samples. Tubes can be used in most bead homogenizers including the BeadBug 3, BeadBug 6, and BeadBlaster 24. Supplied in packs of 50 tubes. Beads are also available in loose bulk (D1132-60).