4,4'-DDT (ring-13C12,99%) 100 µg/mL in Nonane, 1,2ml Back Catalog number: CLM-1281-1.2 Availability: In the manufacturer's stock Price on request - + Recommended EPA-513LCSS Labelled TCDD/TCDF Spiking Solution, 1.2ml, nonane Price on request 72419 Isovaleraldehyde Price on request 1383.13-200-T 2-Methylcarbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3652-91-3 Price on request