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Operation
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1686-000 GB/2021-03
5 Operation
5.1 Direct and indirect sonication
Objects can be sonicated directly or indirectly in the ultrasonic bath.
Direct sonication
is the standard process. The objects to be soni-
cated are placed in the ultrasonic oscillating tank using suitable
accessories, e.g. a basket. There, they are in direct contact with the
sonication fluid in the tank.
Indirect sonication
is used in the following cases:
• Sonication of sample fluids
• Use of chemically aggressive or flammable liquids
• Use of demineralised water without additives
• Removal of chemically aggressive soiling
• Removal of stains, discolouration and signs of rust with acidic
agents.
The objects or liquids to be sonicated are placed in the sonication
fluid in the ultrasonic oscillating tank using an inset beaker to
transfer the ultrasound. The sonication fluid in the ultrasonic oscil-
lating tank must contain an agent containing surfactant.
For accessories suitable for direct and indirect sonication, see chap-
ter
10 Accessories