1-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml

4-tert-Octylphenol monoethoxylate,1000 µg/mL,MeOH,1mL,

EPA Method 8081A Pesticides QC Mix

3ß,17ß(H),21ß(H)-3-Methylhopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 497938-80-4