Cooling Water Treatment

Guardian Chemicals open recirculating cooling water treatment programs are design to promote water conservation by maximizing cycles of concentration to ensure efficient and cost effective operation while minimizing maintenance and chemical costs.

AQUAGUARD 510 is a multi-functional zinc/phosphate based blend specially formulated for scale and corrosion inhibition in open recirculating cooling water systems. This provides effective corrosion control for mild, stainless, and galvanized steel while also controlling scale by dispersing suspended solids and preventing deposition.

AQUAGUARD 510 is designed to be used in combination with AQUAGUARD 511 to provide complete cooling water scale and corrosion control. The AQUAGUARD 510 and 511 treatment program provides effective scale inhibition and dispersant properties combined with complete ferrous and non-ferrous (yellow metal) corrosion inhibition.

AQUAGUARD 510 features a unique tracer technology which allows for remote monitoring of your cooling programs with our optional control systems. With this, you can better track, trend, and log your chemical and water usage while reducing operator testing and time requirements. The end result: increased accuracy for better control, improved results, and overall cost savings.



  • Dosage rates are easily tested with a handheld or in-line tester. Optional remote monitoring available. 
  • Highly concentrated cooling water treatment, delivering lowest cost to treat program.
  • Ideal water treatment solution for large open recirculating cooling systems
  • In combination with AQUAGUARD 511, forms a highly effective scale and corrosion inhibition package designed for even the toughest water conditions
  • Effective corrosion inhibition even at low calcium levels
  • High temperature capability (up to 70 C)
  • Reduces fresh water makeup requirements, conserving water and reducing operating costs
  • Independent control of dispersant portion of the program, results in lower overall chemical costs while addressing system needs.



AQUAGUARD 510 is formulated to handle the chemical requirements of large open recirculating cooling systems. Designed for corrosive waters with a calcium hardness of less than 1000 ppm and an M Alkalinity of 35 to 700ppm depending on the pH of the cooling water.

Here’s What a Guardian Chemicals
Partnership Looks Like
Step 1
Get in Touch speech bubble icon
Get in touch

Our experts know your industry and will seek to understand the unique challenges of your business. Let’s talk.

Step 2
Truck icon
We come to you

Your systems and processes are interconnected. We’ll arrange a site visit to understand the bigger picture.

Step 3
Lab test tube icon
We propose a solution
A solution is more than just a product—it is a complete program that results in lower life cycle operating cost and considers the impact on health, safety and the environment.
Step 4
Delivery box icon
We deliver fast
Our service is key to your success. We deliver with industry-leading turnaround times, and effective commissioning and training ensure that your system operates safely and effectively from day one.
Ready to Experience the Difference Guardian Chemicals Can Make?

Talk to our team for advice, quotes, and purchasing.

Contact us headphone icon
Contact an industry expert: