This prototype device uses a micropipette instead of a syringe for dispensing operations, making it unsuitable for reaction systems that require strict inert conditions for reagent addition. Also, as no special spectrophotometric devices have been incorporated, there are limitations in tracking reactions that do not show visible light changes. To capitalize on the device's strengths and target a chemically unique reaction system, we focused on a precipitation polymerization reaction to obtain polyimide precursor particles (Scheme 1) . The reaction system is a typical polycondensation reaction where pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA) bond through amidation . In this reaction system, while the monomers dissolve, the polyamic acid is known to form unique particle structures by choosing an appropriate insoluble solvent. These products can be utilized as polyimide particles through a dehydration cyclization reaction induced by heating or applied to high nitrogen-containing carbon materials through high-temperature sintering .