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WG2596642 QUALITY CONTROL SUMMARY <br /> Metals (ICP) by Method 6010D L1895603-01 <br /> L1895702-25 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br /> (OS)L1895702-25 09/09/2517:44•(MS)R4271061-5 09/09/2517:50•(MSD)R4271061-6 09/09/2517:52 Ed <br /> Spike Amount Original Result MSD Result <br /> (dry) (dry) MS Result(dry) (dry) MS Rec. MSD Rec. Dilution Rec.Limits MS Qualifier MSD Qualifier RPD RPD Limits PC <br /> Analyte mg/kg mg/kg mg/kg mg/kg % % % % % <br /> Antimony 114 ND 95.1 95.8 82.1 82.7 1 75.0-125 0.739 20 FS <br /> Arsenic 114 7.73 110 112 89.5 91.6 1 75.0-125 2.15 20 <br /> Barium 114 120 194 191 64.8 62.8 1 75.0-125 J6 J6 1.18 20 <br /> Beryllium 114 ND 105 106 92.0 92.6 1 75.0-125 0.638 20 4 <br /> Cn <br /> Cadmium 114 ND 102 103 88.9 90.0 1 75.0-125 1.24 20 <br /> Chromium 114 25.4 130 135 91.7 96.7 1 75.0-125 4.36 20 FSr <br /> Cobalt 114 7.56 113 113 92.3 92.4 1 75.0-125 0.121 20 <br /> Copper 114 94.0 189 183 83.9 78.4 1 75.0-125 3.38 20 <br /> Lead 114 195 235 223 34.8 24.8 1 75.0-125 J6 J6 4.94 20 <br /> Molybdenum 114 1.45 102 104 88.4 90.1 1 75.0-125 1.92 20 <br /> Nickel 114 19.1 122 125 90.3 93.3 1 75.0-125 2.78 20 <br /> Selenium 114 ND 103 104 90.3 91.7 1 75.0-125 1.61 20 GI <br /> Silver 22.8 ND 19.9 20.5 87.4 90.0 1 75.0-125 2.95 20 <br /> Thallium 114 ND 68.2 67.2 60.0 59.1 1 75.0-125 J6 J6 1.51 20 $AI <br /> Vanadium 114 61.8 157 150 83.4 77.5 1 75.0-125 4.36 20 <br /> Zinc 114 150 212 215 53.9 56.8 1 75.0-125 J6 J6 1.55 20 Fc <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895603 09/23/25 10:16 25 of 53 <br />