EPA Method 8121 Internal Standard Back Catalog number: 81203 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3886.9-100-ME 3-Methylindole, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 83-34-1 Price on request 54135A Oil & Grease - Calibration Price on request DFP-IS-B10 Mass-Labelled PCDD & PCB Internal Standard Solution, 1.2ml, nonane Price on request