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electronic GmbH & Co. KG • Heinrichstraße 3-4 • 12207 Berlin • Deutschland • [email protected]
bath and the inset beakers). We recommend the following ultrasonic products:
STAMMOPUR DR 8, STAMMOPUR R, TICKOMED 1, TICKOPUR TR 3, TICKOPUR R 30,
TICKOPUR TR 7
If none of these products are available, a neutral or mildly alkaline product that does not
destroy aluminium may be used. The product must be approved by the manufacturer for
use in ultrasonic baths.
Conducting the foil test:
Commercially available aluminium foil, scissors, a waterproof pen, a sample holder and
associated inset beakers are required to perform the foil test. In the case of several foil
tests carried out, a comparison with previously produced foils follows after implementation,
or foil generated during initial commissioning.
IMPORTANT
The foil test must be conducted in inset beakers since aluminium foil remains may clog
the cooling circuit. Therefore, it must always be ensured that no aluminium foil gets into
the ultrasonic bath, even during the foil test.
1. Fill 2/3 of the ultrasonic bath with water and 1 % of a suitable preparation
(= 99 parts water + 1 part concentrate), see chapter 4.1.
2. Degas liquid
3. Also
fi
ll inset beakers with the liquid described under 1.
4. Fill the inset beakers with the same liquid, hang them inside the ultrasonic bath and
also degas them for approx. 5 minutes
5. Switch o
ff
the ultrasound
6. Cut aluminium foil (household foil 10
μ
m to 25
μ
m thick) evenly so that the parts
fi
t into
the inset beakers
7. Submerge one foil cut per inset beaker
8. Switch on ultrasound, sonicate for 1 minute at least until there is visible perforation
or hole formation
9. If necessary, increase sonication time up to 3 minutes for more stable foils
(thicker or coated)
10. Switch o
ff
the ultrasound
11. Take a note of the position of the individual foils in the containers or document
with photos
12. Switch o
ff
the ultrasound, take the foil out and let it dry
13. Label the foils accordingly with the position of the inset beaker,
duration and date, and then archive
14. Rinse inset beakers thoroughly to
remove detached foil particles
15. Check ultrasonic bath for foil residue,
if necessary renew and
fl
ush all liquid,
see chapter 4.4.
Perforation of the foil must be visible
(see illustration), otherwise contact
the manufacturer
Inset beaker
Aluminium foil,
must be immersed
Fill level in
the inset
beaker
Sample slide from
an inset beaker
