Abstract: A system for performing a plurality of independent analysis procedures simultaneously, each procedure having a sample and at least one process step for operating on that sample the system having a robotic device for moving a sample among a plurality of processing stations where the robotic device comprises substrate to which are coupled a plurality of tiles each one of the tiles disposed at a selected location on the substrate; a plurality of reagent trays coupled to the tiles, each one of the reagent trays having substantially identical shape and size; a robotic arm disposed for reaching substantially all the tiles; and capable of coupling and decoupling from a sample holder, the sample holder capable of holding at least one sample in a selected position, whereby the robotic arm is capable of moving the sample from a first one of the reagent trays to a second one of the reagent trays; and a processor for selecting, at a plurality of times a sample to be moved, and for directing the robotic arm to move the sa

Abstract: A system which performs a plurality of independent analysis procedures simultaneously, possibly involving differing types of tissues and differing process steps, comprising a robotic device, which may cause the different tissue samples to be processed by processing stations, and a processor, which may select the next process step. The processor may direct the robotic device to interleave the differing process steps. The processor may select a next process step in response to timing information about the procedures, which may specify the start time and end time of each process step. The specified times may be exact or may be a range of times. The processor may determine the exact time for a step by generating a possible sequence of steps and examining that sequence for conflicts, adjusting that sequence in response to those steps with a specified range of times, and iterating the calculation over a plurality of possible sequences.