This service contract will provide the processing of water samples for the Renal Dialysis Unit. This includes Colony Forming Unit, LALs, AAMI and Fluid Balance testing. These tests are required by the... This service contract will provide the processing of water samples for the Renal Dialysis Unit. This includes Colony Forming Unit, LALs, AAMI and Fluid Balance testing. These tests are required by the Advancement of Medical Instrumentation (AAMI) and by the manufacturers of equipment we use for the dialysis unit to ensure patient safety.