Two-dimensional uniformly fed unstirred chemical reactor

An apparatus and method for producing and observing spatial patterns in chemical reaction comprising a vessel having a laminate positioned in said vessel forming a chamber. The laminate comprises a polymer gel layer (or other porous medium) sandwiched between a transparent layer and an array of capillary tubes. The capillaries in the array are perpendicular to the gel surface in order to allow access to the gel from the chamber only in a direction perpendicular to the surface of the gel.