How do you prepare a 100 PPM sanitizing solution?

To prepare a 100 PPM (parts per million) sanitizing solution, it is important to understand the relationship between the concentration of the solution and the amount of the active ingredient, usually a sanitizer like chlorine bleach, that you need to dilute in water.

Using 1 ounce of sanitizer for 1 gallon of water effectively creates a concentration of 100 PPM. This is because 1 ounce of a typical liquid chlorine bleach can yield the required sanitizing properties when mixed properly with a gallon of water. The measurement accounts for the concentration of the bleach and creates a solution that is strong enough to effectively sanitize surfaces while being safe for use.

In contrast, the other options either provide too high a concentration of sanitizer, which can lead to damaging surfaces or being unsafe, or too low a concentration, which may not be effective for sanitizing purposes. Knowing the correct dilution ratio is crucial for ensuring both safety and effectiveness in sanitizing practices.