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Defoamer A RD-28

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Non-Silicone, for use in Developers or other Spray Systems

Defoamer A (RD-28) is a fully organic non-Silicone water soluble defoamer that rinses readily and leaves no residue. It is designed for systems where clean rinsing is essential. It is odor-free and biodegradable. Defoamer A (RD-28)will defoam any aqueous (water-based) or semi-aqueous system at any pH. It is ideal for defoaming semi-aqueous photoresist developers, strippers or cleaners of any type. MAKE-UP:
100 to 5000 ppm. Try 1000 ppm to start. This is equivalent to 0.10 oz./gallon.

Use at 70o to 130o F. Defoamer A permanently defoams. It will not be deactivated or "used up" in solution.

Defoamer A is compatible with all materials used in equipment.


Defoamer A (RD-28) is non-hazardous. Consult Material Safety Data Sheet for further information.

Defoamer A (RD-28)is biodegradable and "in use" concentrations may be deposited legally into any sewer system. Dispose of in accordance with Federal, State and local regulations. Contact your RD Chemical representative for further information.


Defoamer A is available in 15 gallon drums and 5 gallon pails.

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