In herbicides or pesticides What is Emulsifiable Concentrate used for?

Emulsifiable Concentrate (or EC) as it is described on the packaging refers to the formulation of a pesticide or insecticide; another example would be WP (or wettable powder).

Emulsifiable Concentrate means that the product (containing the active ingredient and an emulsifier) is water soluble and can be applied via a spray nozzle (or even as a drench if the active ingredient is systemic).