D5-Norfloxacin, 100 µg/ml, Acetonitrile, 1ml

4-Nonylphenol (techn.), 100µg/ml in MeOH, 5ml

8-Methyl-2-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 19393-87-4

2,2,4,5-Tetrachlorobiphenyl (BZ-49)