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CI No. 87 Cooling Water Compound
Scale and corrosion treatment for open recirculating cooling towers running a monitored control program.
Concentrated cooling water treatment for open recirculating cooling towers and condenser feed water. Anti-scaling agents combined with cathodic and anodic inhibitors protect steel and soft metals while supporting higher cycles of concentration through alkalinity control. Best positioned for monitored programs where the operator is tracking a full control window: pH 7.5–8.5, conductivity 900–950 µmhos, M-alkalinity 50–150 ppm, and phosphonate residual at 25–30 ppm as AMP (NTP), or orthophosphate at 15–20 ppm as PO₄. For towers that are tested and adjusted routinely, No. 87 is the treatment compound that ties scale control, corrosion protection, and cycle management into one operating program
$269.00 / 20 L pail
Technical Data
Technical Data
Technical Properties
CI No. 87 Cooling Water Compound
Concentrated cooling water treatment for open recirculating cooling towers and condenser feed water. Anti-scaling agents combined with cathodic and anodic inhibitors protect steel and soft metals while supporting higher cycles of concentration through alkalinity control. Best positioned for monitored programs where the operator is tracking a full control window rather than feeding chemistry blindly.
Product Type
Scale and Corrosion Treatment for Open Recirculating Cooling Towers
System Fit
Open Recirculating Cooling Towers and Condenser Feed Water
Primary Function
Prevent Scale Formation and Corrosion in Monitored Tower Water Programs
Protection Mechanism
Anti-Scaling Agents with Cathodic and Anodic Inhibitors
Metallurgy Coverage
Protects Both Steel and Soft Metals
Operational Role
Treatment Compound for Towers Running Controlled Cycles of Concentration
Program Focus
Higher Cycles Through Alkalinity Control and Residual Monitoring
Monitoring Profile
Built for Operators Tracking pH, Conductivity, Alkalinity, and Phosphonate Residual
Control Window
pH 7.5–8.5 | Conductivity 900–950 µmhos | M-Alkalinity 50–150 ppm
Residual Target
Organophosphonate 25–30 ppm as AMP (NTP) or Orthophosphate 15–20 ppm as PO₄
Feed Method
Manual Addition or Automatic Continuous Feed Equipment
Potable Water Status
Not for Use in Potable Water Systems
Operational Notes
• This is the tower treatment compound for the scale-and-corrosion side of the program, not the biocide side
• Strong fit where the operator is actually running a monitored control program rather than feeding by guesswork
• Alkalinity control is part of the selling point: it supports higher cycles of concentration when the rest of the program is managed correctly
• Daily analysis should include pH, alkalinity, and phosphonate or phosphate residual, with periodic checks on feed water alkalinity as well
• Conductivity target is part of what distinguishes No. 87 from thinner, less fully specified cooling water writeups
• Best used where the tower operator wants one treatment compound tying scale control, corrosion protection, and cycle management into the same operating program
Practical Fit
CI No. 87 belongs in open recirculating cooling towers where the chemistry program is expected to be measured, adjusted, and held inside a real operating envelope. It is the cooling water compound for operators who want defined targets for pH, conductivity, alkalinity, and phosphonate residual rather than a vague “tower treatment” label with no control discipline behind it.
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