Cations Std. Level 2

Citric acid [0.3% wt]

Perdeuterated Internal Standard PAH-Mixture 4 5 analytes, each1000 µg/mL in benzene-d6; units: 1x1mL, 1x5mL 1337.16 Fluoranthene-d10 [93951-69-0] 1348.20 Benzo[b]fluoranthene-d12 [93951-98-5] 1349.20 Benzo[k]fluoranthene

1-tert-Butyl-4-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 7364-19-4