Boiler Chemicals

Boiler water treatment products incorporate oxygen scavengers, and alkalinity boosters for corrosion inhibition, and anti-scalants to prevent concrete-style scale build-up in boilers. Addition of boiler chemicals minimizes or even eliminates corrosion and scaling inside a boiler and significantly prolongs its lifetime. This is the simplest and most cost-effective way to protect your investment in a boiler system.

Simple tests can determine whether boiler water treatment is required with speciality chemicals:

  1. Test pH: Ideally, the boiler water should be moderately alkaline (pH 9.0 – 9.5 for steel boilers, 8.5 – 9.0 for systems with aluminium heaters). An inexpensive pH tester can be purchased from Avalon Science Store.
  2. Test ORP: The oxidation-reduction potential (ORP) should be negative (-100 mV or lower), indicating a reducing environment. An inexpensive ORP tester can be purchased from Avalon Science Store.
  3. Measure Calcium Concentration. Osorno will measure the calcium concentration to determine the need for anti-scalants, free of charge for clients.

pH and ORP should be tested weekly, and the calcium concentration should be measured every quarter, as well as when make-up feedwater is added.

Oxygen Scavengers

Oxygen scavengers are added to boiler water to remove oxygen and prevent corrosion. Oxygen is enemy #1 in boiler water.

Osorno’s oxygen scavengers are packaged in returnable 20 litre delcans. One delcan is sufficient to treat 5,000 L of boiler water, and can capture the oxygen content of 1,400 L of air. Oxygen scavengers adjust the pH of boiler water to between 8.5 and 9.0.

For boiler systems with aluminium components, oxygen scavenger is available with increased aluminium protection.

Boiler Anti-Scalants

Boiler anti-scalants are widely used to reduce scale formation. Scale build up can lead to explosive local overheating, and even rupture of the boiler. Osorno will measure the amount of anti-scalants required for boiler systems free of charge for clients.

Osorno’s anti-scalant is packaged in returnable 20 litre delcans.

pH Booster

Osorno’s oxygen scavenger and Osorno’s anti-scalant have integrated corrosion protection through an increased pH, which will typically maintain boiler water pH at about 8.5. Iin some cases, such as with all-steel systems, a higher pH (9.0 – 9.5, or even higher) may be desirable. In these cases, pH can be gradually increased by adding pH booster.

Osorno’s pH booster is packaged in returnable 4 litre bottles.