Which two factors determine the strength of a cleaning solution?

The strength of a cleaning solution is primarily determined by its pH and concentration.

pH is a crucial factor in cleaning because it indicates whether a solution is acidic, neutral, or alkaline. Different types of soils, stains, and materials respond better to specific pH levels. For instance, alkaline solutions are often more effective at dissolving grease and organic matter, while acidic solutions can work well on mineral deposits. Thus, knowing the appropriate pH level helps in selecting the right cleaning solution for specific tasks.

Concentration refers to the amount of active cleaning agent present in the solution. Higher concentrations generally lead to more powerful cleaning effects, as there are more agents available to interact with and break down soils and stains. However, the concentration must also be appropriate for the material being cleaned to avoid damage.

Overall, both pH and concentration play critical roles in how effective a cleaning solution will be against various contaminants and surfaces.