If the dip test shows less than 100ppm, installers can immediately resolve the issue by adding a high-quality inhibitor such as Fernox Protector F1 or where a filter is fitted, Protector+ Filter Fluid. The test can be re-taken once the inhibitor has circulated to confirm the level has been met.
When should Protector + Filter Fluid be used in a heating system?
Protector + Filter Fluid should only be used in combination with an in-line system filter, which can trap and contain the debris in the system before safe removal. It is ideal for use in circumstances where a system has previously been cleaned or flushed but subsequently has not been adequately protected so further corrosion has taken place. It is also



















