Choosing the ultrasonic fluid
Nozzles are often made of alloy (brass). Tickopur RW77 is most effective when it comes to cleaning such alloys. Unfortunately, the sprayers themselves are made of aluminium, and Tickopur RW77 cannot be used to clean it (aluminium turns black). Aluminium can be cleaned using Tickopur R33 (milder than RW77). Tickopur R33 is commonly used in the airbrushing industry. Dissolve in tap water at a 3 to 5% mix ratio. Heat to approximately 50 degrees Celsius in a well-degassed bath. Clean as soon as possible after use so that the paint does not harden, or has the least possible time in which to harden.

In addition, it is very important to remember that ultrasonic cleaning only works in areas where there is contact with the fluid. A blocked nozzle will contain air when immersed, often in its tip. The nozzle must therefore be opened with a sharp object, thereby ensuring that the fluid reaches the necessary areas.

Choice of ultrasonic cleaner
The ultrasonic cleaning of an airbrush nozzle is a tricky job. This makes the cleaning strength of the ultrasonic cleaner an important factor. A 35 kHz sonifier with high ultrasonic capacity is recommended for this purpose.

Polyurethane
It is very difficult to use ultrasonic cleaning to clean polyurethane from a nozzle using a water-based solution. Solvents are often used for this purpose, but these cannot be used in an ultrasonic cleaner.

The only solution is to apply ultrasonic cleaning directly after spraying (so in a wet and unhardened state) using Tickopur R33 (5% mix ratio, 55 to 60 degrees). Ultrasound treatment using a water-based solution will not remove hardened polyurethane.

blog diclaimer