Aroclor 1221 in Transformer Oil

Diflufenican, 100 µg/ml, Ethyl acetate, 1ml

O-Desmethyl tramadol-d6 (racemic) , 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no. 16412-54-7

10,11-Dihydro-10-hydroxycarbamazepine, 1000μg/ml in MeOH, 1ml