Abstract: A photographic print and film washer which achieves the washing of photographic sheet material to archival quality. The washer features a liquid supply element for introducing a continuous stream of washer liquid under pressure to the interior compartment of a basin, to generate therein a hydrodynamic, generally horizontal, circumferentially-extending, generally laminar liquid flow. The basin has wall portions bounding an interior compartment for containing the photographic material to be washed. The interior compartment is bounded by an inner circumferential wall surrounding the photographic material. The washer liquid supply element includes a liquid inlet element in fluid communication with the interior compartment of the basin, and operative for continuously admitting washer liquid therein in a generally circumferential direction for washing the photographic material, and a washer liquid discharge facility for discharging spent washer liquid from the interior compartment of the basin.