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WG2597273 QUALITY CONTROL SUMMARY <br /> Metals (ICP) by Method 6010D L1895744-01 <br /> L1895744-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) Ed <br /> (OS)L1895744-01 09/10/2512:25•(MS)R4271340-5 09/10/2512:30•(MSD)R4271340-6 09/10/2512:32 <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 266 8.51 248 249 90.1 90.6 1 75.0-125 0.489 20 FS <br /> Arsenic 266 5.67 269 269 99.2 99.0 1 75.0-125 0.149 20 <br /> Barium 266 976 1020 855 17.1 0.000 1 75.0-125 J6 J6 17.7 20 <br /> Beryllium 266 ND 270 275 101 104 1 75.0-125 2.11 20 4 <br /> Cn <br /> Cadmium 266 2.61 264 261 98.2 97.3 1 75.0-125 0.891 20 <br /> Chromium 266 341 556 471 81.1 49.0 1 75.0-125 J6 16.6 20 FSr <br /> Cobalt 266 12.5 276 272 99.1 97.8 1 75.0-125 1.33 20 <br /> Copper 266 1240 1850 778 229 0.000 1 75.0-125 V J3 V 81.5 20 <br /> Lead 266 110 368 371 97.0 98.0 1 75.0-125 0.716 20 <br /> Molybdenum 266 37.8 315 295 104 96.7 1 75.0-125 6.55 20 <br /> Nickel 266 289 594 479 115 71.5 1 75.0-125 J3 J6 21.4 20 <br /> Selenium 266 ND 252 256 94.8 96.4 1 75.0-125 1.61 20 GI <br /> Silver 53.2 4.61 54.3 55.5 93.4 95.7 1 75.0-125 2.16 20 <br /> Thallium 266 ND 157 178 59.1 67.0 1 75.0-125 J6 J6 12.6 20 $AI <br /> Vanadium 266 25.6 290 286 99.3 97.8 1 75.0-125 1.31 20 <br /> Zinc 266 1600 1720 1600 44.1 0.000 1 75.0-125 V V 7.31 20 Fc <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 26 of 53 <br />