Chromium (Cr), 1µg/ml in 2%-HNO3/Water, 4 x 25ml

6-Chloro-4-(2-chlorophenyl)-2-quinazoline carboxaldehyde, neat, Solvent-neat, Unit 25mg, # of units-, Cas.no. 93955-15-8

D8-Ciprofloxacin hydrochloride hydrate, 100 µg/ml,

Chrysene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 1719-03-5