modular microfluidic systems includes a plurality of microfluidic modules , each capable of performing fluidic operations including , but not limited to , filtering , splitting , regulating pressure , mixing , metering , reacting , diverting , heating , cooling , and condensing are provided . the microfluidic modules are polymeric , stencil - based structures adapted to be coupled in sequence for performing biological or chemical synthesis , including , but not limited to , chemical and biological syntheses of organic , polymer , inorganic , oligonucleotide , peptide , protein , bacteria , and enzymatic products .