Patent ID: 8632734

Claim:
A unitary microreaction device comprising: at least one thermal control fluidic passage; a principal working fluidic passage with average cross-sectional area in the range of 0.25 to 100 mm 2 , said principal fluidic passage having a primary entrance communicating at a first end thereof with the exterior of the device, and having multiple secondary entrances positioned serially at spaced locations along the length thereof, the spacing between secondary entrances having a length along the principal fluidic passage of at least two times the root of the average cross-sectional area of the principal fluidic passage; at least one secondary working fluidic passage having an average cross-sectional area in the range of 0.25 to 100 mm 2 , said secondary fluidic passage having an entrance at a first end thereof and multiple exits positioned serially at spaced locations along the length thereof, said multiple exits including a final exit at the end thereof, each exit being in fluid communication with a corresponding one of the multiple secondary entrances of the principal fluidic passage, such correspondence being established in order from the exit and entrance nearest the respective first ends of the principal and secondary fluidic passages to the exit and entrance furthest therefrom, wherein said principal fluidic passage includes firstly a mixing section and secondly a dwell-time section, in order, between each one of said multiple secondary entrances in the direction away from the first end of said principal fluidic passage, wherein said mixing section comprises a section narrower and more tortuous than the dwell-time section and said dwell-time section comprises a section broader and less tortuous than the mixing section.