Dilution ratio expresses how much water is added to a concentrate to create a working solution. A ratio of 1:50 means one part concentrate to fifty parts water. Getting this right is critical — it directly affects cleaning power, chemical cost per wash, surface safety, and biodegradability of the wastewater.
Why precision matters:
- Under-diluted (too strong): Wastes product, raises cost per wash, increases pH beyond safe levels, and may damage paint or trim.
- Over-diluted (too weak): Insufficient surfactant and chelating agent concentration leads to poor cleaning, streaks, and customer complaints.
How to measure correctly:
- Use a calibrated refractometer to verify concentration of the working solution.
- Check the dosing pump output regularly — flow rates drift over time.
- Adjust for seasonal conditions: in winter, heavier road salt contamination may require a slightly stronger mix.
Fortis Foam PRO is designed for a working range of 1:30 to 1:60, giving operators flexibility to adapt to varying dirt levels. The recommended starting point is 1:50 for standard conditions.
For common pitfalls and how to avoid them, see our guide on dosing mistakes. You can also calculate your exact usage with our article on foam consumption calculations.