How many ounces of concentrate are required to make a 0.5% use dilution if 4.8 oz results in a 2.0% dilution?

To determine how many ounces of concentrate are needed for a 0.5% use dilution, given that 4.8 ounces results in a 2.0% dilution, you can use basic dilution calculations. The principle involves setting up a relationship based on the concentration levels.

If 4.8 ounces results in a 2.0% solution, you first determine how much concentrate corresponds to a 0.5% solution, which is one-fourth (0.5% is 25% of 2.0%). Therefore, to achieve a 0.5% concentration, you would use one-fourth of the amount of concentrate required for the 2.0% solution.

Calculating this gives:

4.8 ounces / 4 = 1.2 ounces

This means that 1.2 ounces of concentrate is needed to make a 0.5% use dilution. This method illustrates how to manipulate percentages to ascertain the required volume of a concentrate when changing dilution strengths.