If it takes 4.8 oz of concentrate to make a 2.0% use dilution, how many ounces are needed for a .5% use dilution?

To find out how many ounces are needed for a 0.5% use dilution based on the given information, we start by understanding the relationship between the amount of concentrate and the concentration percentage.

Given that 4.8 ounces of concentrate results in a 2.0% dilution, we can set up a proportion to figure out the amount needed for a 0.5% dilution. A 0.5% dilution represents one-fourth (0.5% is one-fourth of 2.0%) of the concentration of the 2.0% dilution. Therefore, to achieve this lower concentration, we should only need one-fourth of the amount of concentrate used for the 2.0% dilution.

Calculating one-fourth of 4.8 ounces gives us:

4.8 oz ÷ 4 = 1.2 oz.

This means that to create a 0.5% use dilution, you would need 1.2 ounces of the concentrate. This understanding of dilution ratios and how they scale down based on concentration is essential for making accurate preparations in pest control practices.