The Benchmark Scientific D1032-SK Triple-Pure Starter Kit contains 10 prefilled tubes each of 0.1mm, 0.5mm, 1.0mm, 1.5mm and 3.0mm diameter zirconium (ceramic) beads. The tubes are ready to use: beads are acid washed and heat treated and certified to be nuclease and protease free. Tubes are filled in a process tested by qPCR to be free of stray DNA. Suitable for use in most bead homogenizers including the BeadBug 3, BeadBug 6 and BeadBlaster 24.