What is the required percentage of the EDTA solution when treating a boiler with EDTA waterside cleaning chemicals?

The correct percentage of the EDTA solution required for treating a boiler with EDTA waterside cleaning chemicals is indeed 1%. This concentration is optimal because it provides effective chelation of harmful metal ions and contaminants that can accumulate within the boiler system, without being overly concentrated, which could lead to other issues such as foaming or scaling.

Using a 1% solution strikes a balance by ensuring that the cleaning agent is strong enough to effectively bind with and remove contaminants while also minimizing the risk of adverse effects on the boiler's materials or operation. Different tasks within boiler treatment protocols may call for varying concentrations, but 1% is widely accepted as a standard for general waterside cleaning.