A 96-well SPRI reactor in a photo-activated polycarbonate (PPC) microfluidic chip

A 96-well solid-phase reversible immobilization (SPRI) reactor in a micro molded, photo-activated polycarbonate (PPC) chip was designed, fabricated, and used to purify genomic DNA (gDNA) in a highly parallelized fashion. A SPRI reactor was designed to fit in a 96-well microtiter plate format with compatibility to the existing samples/reagents loading technologies. A high quality, metallic, large area mold insert (LAMI) was fabricated using a SU-8 based UV-LIGA technique. Micro molding of polycarbonate (PC) was done using hot embossing, resulting in good replication fidelity over the large surface area. The 96-well PPC-SPRI reactor, assembled by thermal fusion bonding, showed 100% efficiency for simple and fast purification of gDNA from whole cell lysates of bacterial species. The 96- well PPC-SPRI reactor will open up new avenues for low cost, disposable DNA sample purification in high throughput applications.