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5.6 Switching the heater on and off
WARNING
Risk of scalding
During heating, vapour bubbles can rise explosively under certain conditions
(retardation of boiling).
- Stir the sonication liquid occasionally during heating or switch on the ultrasound.
Heated sonication fluid intensifies the effect of the ultrasound. Experience has shown
that the best results are obtained with a temperature of 50 to 60 °C. This can reduce
the sonication time. At higher working temperatures, the effect of the ultrasound
decreases again.
Ultrasound also heats the sonication fluid. During continuous operation, the working
temperature of the sonication fluid can rise above the set value – particularly if
the oscillating tank is covered. Therefore, check the working temperature when
processing temperature-sensitive objects.
• Please heed the specifications of the agent manufacturer on optimum temperature.
• Pre-heating during degassing of the sonication fluid is ideal.
See chapter
5.7 Degassing the sonication fluid
• Before pre-heating, remove the basket or other accessories from the oscillating tank.
Cover the ultrasonic oscillating tank with the lid if available.
Turn on the heater by turning the rotary knob to the desired temperature.
- The yellow and white indicator lights will light up.
- When the target temperature is reached, the yellow indicator light goes out.
5.7 Degassing the sonication fluid
Freshly-filled sonication fluid or liquid that has remained in the oscillating tank for a long
period of time must be degassed prior to use. Degassing of the sonication fluid increases
the ultrasound effect.
• Cover the ultrasonic oscillating tank with the lid if available.
• For degassing, switch on the ultrasound. The degassing time is 30 minutes.
Information
During degassing, the ultrasound noise becomes quieter. This means that the ultrasound
effect increases.
Operation