Nalco 93033

Inject Nalco 93033 directly into the cooling water basin or into the recirculating pump suction line. Avoid feeding immediately before filtration systems. Use a chemical metering pump (diaphragm type) with chemical-resistant wetted parts (PVC, Viton, Teflon).

In the world of industrial water treatment, few product codes carry as much weight as Nalco 93033. Manufactured by Ecolab’s Nalco Water division, this specialty chemical is a liquid scale and corrosion inhibitor designed primarily for open recirculating cooling water systems. For facility managers, plant engineers, and water treatment professionals, understanding the precise application, chemistry, and safety protocols for Nalco 93033 is critical to maximizing system efficiency and extending equipment lifespan.

Nalco 93033 is not a general-purpose biocide or a simple pH adjuster. It is a sophisticated, multi-component formulation that targets two of the most destructive forces in cooling towers: mineral scale (calcium carbonate, calcium phosphate) and metallic corrosion (iron, copper, and their alloys).

A typical starting dose for a new system or after a cleaning is 50-100 ppm of product based on system volume. For continuous feed, use the formula: nalco 93033

[ \textFeed (gallons/day) = \frac\textCirculation Rate (gpm) \times 1440 \times \textTarget ppm1,000,000 \times \textProduct Density ]

Most facilities use a bleed-and-feed controller that links chemical injection to makeup water flow or conductivity.


Nalco 93033 is sold through authorized Nalco Water distributors and direct via Ecolab’s industrial channel. Pricing is typically $4 – $8 per pound depending on volume and contract terms. It is available in: Inject Nalco 93033 directly into the cooling water

NSN (NATO Stock Number) availability: Nalco 93033 is not commonly stocked under NSN, but Nalco provides cross-references for military-grade cooling systems upon request.

Suspended solids like silt, clay, and iron oxides naturally concentrate in cooling towers. Without a dispersant, these particles agglomerate and settle in low-flow zones. Nalco 93033’s polymer coats each particle with a negative charge, causing them to repel each other and remain in the bulk water flow.


The most common application. Nalco 93033 is designed for systems with recirculation rates between 1,000 and 500,000 gallons. It protects carbon steel, copper, and admiralty brass against pitting and galvanic corrosion. Nalco 93033 is sold through authorized Nalco Water

In refineries and chemical plants, heat exchangers are prone to severe scaling due to high skin temperatures. The polymer technology in Nalco 93033 excels at keeping these critical surfaces clean.

Important: The following are general guidelines. Always perform a thorough system analysis and follow the specific Nalco Water Service Bulletin for your facility.