Figure 4.

Schematic of DG8 cartridge for droplet generation: The droplet cartridges are composed of microfluidic channels. Sample is loaded into the center chamber of the cartridge, and oil is loaded into the bottom chamber then a gasket is applied and the cartridge plus holder are transferred to the droplet generator. The droplet generator applies vacuum pressure to pull samples and oil though these microfluidic channels. The samples and oil meet at a T-junction where they form water-in-oil droplets which then collect in the last chamber.