What functionality does a sifter serve in the context of marijuana processing?

A sifter plays a crucial role in the processing of marijuana by refining and cleaning the product. Its primary function is to separate the finer particles from larger ones, ensuring that the final product is of high quality and free from unwanted materials such as stems and seeds. By using a sifter, processors can enhance the purity and potency of the marijuana, as it allows for the collection of trichomes—the resin glands that contain the active compounds responsible for the plant's effects.

In contrast to the function of a sifter, preparing meals is not relevant to its specific purpose within marijuana processing. Aeration, while beneficial in certain contexts, does not align with the primary role of a sifter, which focuses on separation rather than introducing air to the product. Additionally, the storage of marijuana is a completely different process, involving controlled environments to maintain quality and prevent degradation, rather than the active refinement that a sifter provides.