The OA-1 kit is designed to assist the technician in evaluating the condition of the operating compressor. Using the kit, a sample of any refrigerant lubricant is sent to our laboratory. A complete spectrographic analysis indicating the presence (in ppm) of up to 21 contaminants (including metals which indicate wear), plus a chemical analysis for acid, moisture content and oil viscosity is mailed to the submitter. Based on these readings, the report suggests maintenance and repairs which may be needed. If additional oil samples from the same compressor are sent at later dates, the test report for each sample will list not only the current analysis, but also all of the previous analyses. This builds a history of that compressor?s condition and allows the technician to predict needed maintenance and/or replacement.