Recirculating Cooling Water Non-Oxidizing Fungicide
Isothiazolinone-based non-oxidizing biocide for cooling towers and closed loops. Long-residual action; complements AD-401 in dual-biocide rotation programs.
AD-402 is an isothiazolinone-based non-oxidizing biocide providing long-residual microbial control. Its dual-active formulation (CMIT/MIT) delivers rapid kill followed by sustained inhibition of bacterial regrowth. Used in alternation with AD-401 and oxidizing biocides to prevent the development of biocide resistance in long-running cooling systems.
- Recirculating cooling systems
- Closed-loop chilled water
- Industrial wet scrubbers
- Pulp and paper process water
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 Recirculating Cooling Water Non-Oxidizing Fungicide in Pakistan?
Stock-spec AD-402 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-402?
For Recirculating Cooling Water Non-Oxidizing Fungicide, 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-402?
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-402 compare to imported alternatives?
AD-402 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.