Cefazolin sodium salt, certified, 0.1g

2,2',4,4',5,5'-Hexachloro-3-biphenylol, 1.2ml x 50ug/ml, nonane

2,2',3,4,4',5',6-Heptachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 52663-69-1

Picene, 50 µg/mL in Toluene, 1ml