fluorometer Minimum Frequency Acceptance Criteria Corrective Action QC Sample or Activity Investigate problem. Calibration With each run r2 value near 0.999 Correct any obvious problems. Repeat calibration until acceptable. Method Blank Before any run and <RL Rinse cuvette and repeat between sample sets until criteria is met. Sample Duplicate One (1) per sample set RPD + or - 5% Investigate problem. Report (10 samples) to Laboratory Director if problem is unknown. Matrix Spike One (1) per sample set RPD + or - 25% Investigate problem. Report to Laboratory Director if (10 samples) problem is unknown. Laboratory Control One (1) with 90-110%R Investigate problem. Standard calibration and with Correct any obvious each calibration check problems. Repeat until acceptable. Samples and 75-125% R Investigate all unacceptable Internal PE sample frequency determined results. RPD < 25% by Lab QA Officer Samples and frequency determined Investigate all unacceptable Blind PE sample Determined by PE provider by accrediting results. agencies and projects LCS = laboratory control sample QC = quality control MB = method blank %R = percent recovery MDL = method detection limit RL = reporting limit MS = matrix spike RPD = relative percent difference PE = performance evaluation
fluorometer QC Sample or Activity Minimum Frequency Acceptance Criteria Corrective Action Calibration With each run r2 value near 0.999 Investigate problem. Correct any obvious problems. Repeat calibration until acceptable. Method Blank Before any run and between sample sets <RL Rinse cuvette and repeat until criteria is met. Sample Duplicate One (1) per sample set (10 samples) RPD + or - 5% Investigate problem. Report to Laboratory Director if problem is unknown. Matrix Spike One (1) per sample set (10 samples) RPD + or - 25% Investigate problem. Report to Laboratory Director if problem is unknown. Laboratory Control Standard One (1) with calibration and with each calibration check 90-110%R Investigate problem. Correct any obvious problems. Repeat until acceptable. Internal PE sample Samples and frequency determined by Lab QA Officer 75-125% R RPD < 25% Investigate all unacceptable results. Blind PE sample Samples and frequency determined by accrediting agencies and projects Determined by PE provider Investigate all unacceptable results. LCS = laboratory control sample QC = quality control MB = method blank %R = percent recovery MDL = method detection limit RL = reporting limit MS = matrix spike RPD = relative percent difference PE = performance evaluation
Withers%20MST%20QAPP%2001072013.docx