Whenever instrument performance or quality control samples are not in conformance with the Quality Assurance/Quality Control Manual guidelines, corrective action steps are taken and a report is prepared. These reports are kept with the QA/QC officer. The information recorded in these reports includes the type and time of occurrence of the non-conformance, as well as the corrective steps that were taken. The report is reviewed by the QA/QC officer and, after approval; the instrument can be used for analytical work. The data generated during the non-conformance period is not submitted. Samples are reanalyzed after the implementation of corrective action and new data are submitted.