• protects after degreasing before painting, subsequent colouring or painting is possible without any problems and without influencing the paint adhesion
• has been proven in pressurised water, water test basins, in leak tests, e.g., hollow objects, tanks, cooling systems, radiators, intake manifolds, in cooling water, in cooling circuits, e.g., engine test stands, etc.
• passivates steel parts and castings after deoxidation and etching
• conditionally suitable for non-ferrous metals and aluminium
• does not build foam
• free of chromate, nitrate, nitrite, phosphate, and mineral oil

RHOBA SUPRA C303 is ideally suited for use in dipping, spraying and pressure washing systems and is preferably used in the last zone of a multi-chamber system.

Optimal corrosion protection is achieved if the application solution has a pH value of 10-12. At least 0.5 % solutions are required in distilled water. A concentration of 0.5 % to 1 % is required in tap water. Depending on the desired corrosion protection, the concentration can be increased up to 2.5 %.

Application temperature: 10 – 40 °C

Application time: > 20 sec.

To keep RHOBA SUPRA C303 always in the desired and required bath concentration, the concentration can be determined very easily and quickly using a hand refractometer.

The value read multiplied by a factor of 1.25 = %

Before use, check material compatibility on an inconspicuous spot.

Follow the manufacturer's cleaning and care instructions! No liability can be accepted for improper use and resulting damage.