Horns (probes) transmit ultrasonic energy into a solution. The dimensions of the horn and output control setting determinethe amount of amplitude (tip movement) and degree of ultrasonic activity in the liquid. Generally, the smaller the tip diameter, the higer the amplitude. Larger tip diameters have less amplitude but can accommodate larger volumes. All Sonifier horns and tips are fabricated fromtitanium. Please note the charted amplitude ratings and liquid vol-umes when selecting horns.