What does REI, or restricted entry interval, specify?

The term REI, or restricted entry interval, specifically defines the minimum amount of time that individuals must avoid entering areas where pesticides have been applied. This measure is crucial for ensuring safety, as it allows enough time for the chemicals to dissipate and reduces the risk of exposure to potentially harmful residues. The REI is established based on the toxicity of the pesticide used and the potential risks it poses to human health, particularly for workers who may be in contact with plants, soil, or other surfaces that have been treated.

While the other options discuss relevant aspects of pesticide use, they do not pertain to the concept of REI. For example, the maximum time for storage pertains more to the shelf-life and stability of the pesticides than to immediate safety after application. Equipment calibration is related to ensuring application accuracy and does not have a set time requirement associated with the REI. The maximum time allowed for pesticide application involves timing and techniques of application, which is also different from the health and safety considerations addressed by the REI.