Ibuprofen, 100μg/ml in MeOH, 1ml

Perfluoro-n-dodecanoic acid, 1.2ml x 50ug/ml, methanol

2-Fluorodibenzothiophene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 177586-38-8

Melamine (13C3,99%; Amino-15N3,98%) 100 µg/mL in Water, 1,2ml