What is the formula for calculating gallons of chemical per CFS?

The formula for calculating gallons of chemical per cubic feet per second (CFS) is derived from understanding how to convert parts per million volume (PPMV) into a usable quantity of pesticide or chemical applied over a specific flow rate of water.

The correct formula, which is represented as (PPMV x 450 x minutes applied) / 1,000,000, incorporates several important factors:

1. PPMV understanding: PPMV represents the concentration of the chemical in millions of parts in a volume of water, which is a standard way to express very small concentrations.

2. Conversion factor: The number 450 is a crucial conversion factor used to relate the volumetric flow of the water (CFS) to the concentration of the chemical expressed in PPM. It helps in converting PPMV to a concentration that is measurable in gallons.

3. Continuous flow consideration: The inclusion of "minutes applied" captures the time factor, allowing you to calculate the total amount of chemical based on the continuous or total duration over which the chemical is being applied.

4. Final division by 1,000,000: This division aspect converts the calculation into a usable unit for gallons, making it practical for