BS 7593:2019 recommends that the inhibitor should either be re-dosed at 5-year intervals or, a more comprehensive laboratory test is conducted every five years to provide a more in-depth analysis, and where needed, establish targeted action to resolve issues and restore system efficiency. The Fernox Water Quality Test includes everything needed to take a sample of the system water and send it off to the Fernox laboratory for full analysis.
When I dose with Boiler Noise Silencer F2, do I also need to use a Fernox Protector?
Yes, Fernox Boiler Noise Silencer F2 is designed for use with any Fernox Protector. It should be left permanently in the system with Protector F1 or Protector + Filter Fluid and replaced or topped up at the same time.



















