California Institute of Technology of Pasadena, Calif., has received US Patent No. 7,964,139, "Microfluidic rotary flow reactor matrix." The patent describes a microfluidic device that contains a matrix of rotary flow reactors. The inventors claim that the chip reduces labor relative to conventional fluid handling techniques by using an order of magnitude fewer pipetting steps, and reduces cost by consuming two to three orders of magnitude less reagent per reaction. A PCR format has immediate applications in medical diagnosis and gene testing.