PULSER: By inhibiting heat build-up in the sample, the pulse function enables safe
treatment of temperature sensitive samples at high intensity. The ON and OFF pulse
duration can be set independently from 1 second to 59 seconds. During the OFF portion of
the cycle, the red indicator on the PULSE key will illuminate. If the OFF portion of the cycle
exceeds two seconds, a cautionary message - Sonics in OFF Cycle - will warn the operator
against touching the ultrasonic probe.