Rice grains (dried hulled)
Bullet Blender® homogenization protocol

  • Extract molecules (DNA, RNA, protein, chemicals)
  • Wet final product
  • Sample sizes: 10 to 150 mg.

Notes on the protocol: This protocol does not specify a particular buffer - you may choose which is most appropriate for your downstream application (nucleic acid isolation, protein extraction, etc.).

Materials Required


One of these Bullet Blenders

  • Bullet Blender (BBX24)*
  • Bullet Blender Blue (BBX24B)*
  • Bullet Blender Storm 24 (BBY24M)
  • Bullet Blender 24 Gold (BB24-AU)

*To use these models, set the speed to 10 and use no more than two tubes in the machine.


Homogenization buffer
2 x volume of sample

Bead choices

  • NAVY bead lysis kit (NAVY)
  • 3.5 mm stainless steel UFO beads (SSUFO35) use 6 beads
  • 4.8 mm stainless steel beads (SSB48) use 1 beads


  1. Place the sample in the tube with the beads.
  2. Add a volume of buffer that is twice the volume of the sample. Sample volume may be approximated by sample weight. E.g., for a 100 mg. sample, add 0.2 ml. buffer.
  3. Close the tubes tightly and place them in the Bullet Blender.
  4. Set the controls for Speed 12 and Time 5. Press Start.
  5. After the run, remove the tubes from the instrument and visually inspect the samples. If homogenization is incomplete, repeat the homogenization step at a higher speed.
  6. Proceed with your downstream application.