Method 525.2 Solution B

Ethyl 4-hydroxybenzoate

D3-(±)-Naproxen, 100 µg/ml, Methanol, 1ml

PAH/Dibenzothiophenes Mixture 20 Analytes, each 200 µg/mL in toluene; units: 1x1mL, 1x2mL Prod.no. Compound CAS No. 0712,11 1-Methylnaphthalene [90-12-0] 0713,11 2-Methylnaphthalene [91-57-6] 0725,12 1,6-Dimethylnaphthalene [575-43-9] 0706,13 2,3,5