The present disclosure provides devices and methods for processing and harvesting adipose tissue. The disclosed devices, systems, and methods offer allow for filtering and harvesting small adipose particles. The devices, systems, and methods include a device comprising an interior fill volume and an exterior waste collection volume separated by a filter. Fluids and small molecular elements pass through the filter during tissue processing and may be removed, while adipose tissues of interest may remain within the filter to be collect and reinjected.