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.
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.
- Open recirculating cooling towers
- Closed-loop chilled and heating water
- Industrial process cooling
- Power plant auxiliary cooling
This product ships as part of one of our productised Water Chemistry Programs — recurring chemistry supply, KPI accountability, and engineering support bundled under a single SLA. If you’re running a program-scale duty rather than buying SKUs ad-hoc, the program path is cheaper and more reliable.
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.
Procurement, dosing, and what to expect.
What is the typical lead time for Circulating Cooling Water Corrosion Inhibitor in Pakistan?
Stock-spec AD-303 ships from our Karachi warehouse within 3-5 working days. Custom-blend orders or larger volumes (>5 metric tonnes) take 2-3 weeks if drawn from our Innovative Water Technology line, or 4-6 weeks if direct-imported from Shaanxi Ande in China.
What's the minimum order quantity for AD-303?
For Circulating Cooling Water Corrosion Inhibitor, MOQ is typically 200 kg for stock-spec liquid grades and 1 metric tonne for solid/granular forms. Trial drums (25–50 kg) are available on request for new accounts running pilot tests before committing to a programme.
Do you provide technical support and a dosing programme with AD-303?
Yes. Every order includes a written dosing programme based on your feedwater analysis (LSI/S&DSI for RO, plant capacity for cooling). For ongoing supply contracts, our applications engineer visits the plant on commissioning and reviews KPIs quarterly. Emergency support via WhatsApp at +92 300 823 9990 — same engineer on the line.
How does AD-303 compare to imported alternatives?
AD-303 is produced by Shaanxi Ande Technology (China) — independent IP, international certifications, and a track record across the global power, steel, and oil sectors. Locally blended in Karachi by Innovative Water Technology when needed, which keeps pricing in PKR and lead times under a week. Quality is verified per-batch with COA; we share third-party assay on request.