A system and method for controlling noise produced by an air handling system is provided. The compositions and methods may be used for laundry, toilet bowl cleaners, ware wash cleaners, floor cleaners and the like. The signal conditioning element is capable of being incorporated within the umbilical element and includes a translation element for receiving first predetermined format communications from the aircraft at the first predefined transfer rate and thereafter outputting corresponding second predetermined format communications to the store at at least one second transfer rate. Ligands, ligand analogues, polypeptides, proteins and nucleic acids can be linked to the axial ligands of the dyes to form dye conjugates useful in immunoassays and nucleic acid assays.