Atrazine-d5 (ethyl-d5),100 µg/mL,acetonitrile,1mL,

Naphthalene-1,4-d2, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1683-98-3

Diindenoperylene, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 188-94-3

2,3,4,4,5-Pentachlorobiphenyl, BZ-123