Theophylline, 100µg/ml in MeOH, 5ml

Acetaminophen, 100 µg/ml, Acetonitrile, 1ml

2,2',3,3',4,5,6'-Heptachlorobiphenyl (174)

3-Chloro-1,2-propanediol, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 96-24-2