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Volume gradient dispensing at a single operating condition. (a) Characterization of dispensed volume of two types of multinozzle dispenser (blueprint is inserted as an inset, symbols ● and □ indicate 40-to-40 and 40-to-140 dispensers, respectively, and dashed (red) and solid (black) lines indicate linear fits of data); (b) 30 droplets collected with a 40-to-140 dispenser; (c) 100 droplets collected with a 40-to-40 dispenser that resulted in a 384 well-plate.
