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.. xu a'i .. ., •. a R� �_-, y '� �^ .-nom � � �-, r• ��-�o srp nr rr Vd�^�� - sa �� SHERWOOD LABS CORPORATION Ouality Control Program Page : 4 4. DETECTOR PERFORMANCE The following items are monitored to evaluate the performance of detectors: a. Linearity results compiled from qualified standards. b. Monitoring standard response factors, c. Monitoring baseline voltage. Problems that can be isolated as originating with the detector are approached according to the manufacturers' recommendations for diagnostics and corective action. If recommended actions do not correct detector performance repairs and recalibrations are performed by a factory representative. 5. AUTOSAMPLER PERFORMANCE Evaluation of the autosampler includes procedures intended to determine the validity of sample loading by personnel responsible for analyses and instrument operation and the performance characteristics of the autosampler. The following r items are monitored as pat of the autosampler evaluation process: a. visual examination of all vials to insure that volumes of remaining liquid are the same. Lack of uniformity indicates autosampler mechanical problems and will result in the rerunning of the sample batch, Further use of the autosampler will be suspended until the problem is corrected. The problem will be considered resolved if sample vials contain un f^rm levels of liquid after of standards is satisfactory analysis and repeatabilit% ( see STANDARDS - repeatability guidelines ) . b. tDurng he�loo tion of removal theovial sample id vial vials IDfrom arethe autosampler carefully compared with the information read toes fple ID and of the position on the autosample log pages. correctness of this log is required as part of the data validation process- that -i s- completed prior toSubmission of customer results.