Heptachlor endo-epoxide, 100µg/ml, Acetonitrile, 5ml

N-Methyl-N'-nitro-N-nitrosoguanidine (wetted with ca. 50% water), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 70-25-7

CLP Semi-Volatile Internal Standard

4-Nitrophenol-PFB derivative