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(1) Where applicable, custom lab flags have been used on this report. <br />These data are validated and reported as accurate and in accord with SGS AXYS Analytical Services Ltd. ISO17025 compliant quality assurance <br />processes. <br />Signed: ___________Bryan Alonzo___________ <br />For Axys Internal Use Only [ XSL Template: FC-Form4B.xsl; Created: 16-Jun-2020 11:23:07; Application: XMLTransformer-1.18.7; <br />Report Filename: PFOA_FC_LC_FC0L_151S12__Form4B_SJ2745739.html; Workgroup: WG72387; Design ID: 3973 ] <br />SGS AXYS METHOD MLA-110 Rev 02 <br />Form 4B <br />LC MS/MS CALIBRATION VERIFICATION <br />SGS AXYS ANALYTICAL SERVICES <br />2045 MILLS RD., SIDNEY, B.C., CANADA <br />V8L 5X2 TEL (250) 655-5800 FAX (250) 655-5811 <br />Initial Calibration Date:18-Mar-2020 VER Data Filename:FC0L_151 S: 12 <br />Instrument ID:LCMS/MS Analysis Date:15-May-2020 <br />LC Column ID:C18 Analysis Time:19:42:45 <br />LABELED COMPOUND LAB <br />FLAG 1 <br />RETENTION TIME EXPECTED CONC. <br />(ng) <br />CONC. FOUND <br />(ng) <br />RECOVERY (%) <br />13C4-PFBA 1:55 40.0 39.0 97.6 <br />13C5-PFPeA 4:21 20.0 20.9 105 <br />13C5-PFHxA 4:56 10.0 9.88 98.8 <br />13C4-PFHpA 5:24 10.0 10.2 102 <br />13C8-PFOA 6:10 10.0 9.95 99.5 <br />13C9-PFNA 7:01 5.00 4.95 99.0 <br />13C6-PFDA 7:30 5.00 5.40 108 <br />13C7-PFUnA 7:50 5.00 4.94 98.7 <br />13C2-PFDoA 8:07 5.00 5.22 104 <br />13C2-PFTeDA 8:52 5.00 4.45 89.1 <br />13C3-PFBS 4:54 9.18 9.78 106 <br />13C3-PFHxS 6:17 10.0 9.93 99.3 <br />13C8-PFOS 7:37 10.0 10.6 106 <br />13C2-4:2 FTS 4:49 20.0 13.9 69.7 <br />13C2-6:2 FTS 5:51 20.0 13.7 68.5 <br />13C2-8:2 FTS 7:21 20.0 14.0 69.9 <br />13C8-PFOSA 8:43 10.0 10.1 101 <br />D3-N-MeFOSA 10:07 10.0 10.1 101 <br />D5-N-EtFOSA 10:24 10.0 9.39 93.9 <br />D3-MeFOSAA 7:33 20.0 13.0 65.0 <br />D5-EtFOSAA 7:42 20.0 12.3 61.5 <br />d7-NMe-FOSE 9:59 100 84.3 84.3 <br />d9-NEt-FOSE 10:17 100 79.3 79.3 <br />13C3-HFPO-DA 5:05 40.0 36.0 90.1 <br />Page 1 of 1 (WG72387 -PFOA_FC_LC_FC0L_151S12__Form4B_SJ2745739.html) <br />www.axysanalytical.com <br />Page 58 of 94