Corrosion Inhibitor · AD-303
Circulating Cooling Water Corrosion Inhibitor
Multi-metal corrosion inhibitor for open recirculating cooling systems. Phosphate-zinc-molybdate blend providing film protection on carbon steel, copper alloys, and galvanized surfaces.
Description
AD-303 is a synergistic multi-metal corrosion inhibitor designed to passivate and protect mixed-metallurgy cooling systems. The phosphate-zinc blend provides cathodic protection on carbon steel, while the molybdate and azole components protect yellow metals (copper, brass). Effective across pH 7.0–9.0 with moderate hardness waters.
Typical Applications
- Open recirculating cooling towers
- Closed-loop chilled and heating water
- Industrial process cooling
- Power plant auxiliary cooling
Other chemistries in the range
Complementary products worth specifying together.
Most industrial water programmes use 3–5 chemistries in concert — a coagulant, an antiscalant, a biocide rotation, and a corrosion inhibitor. Here are three from our catalogue that pair commonly with this product.