EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1650.11-100-IO 1,1,1,3,10,11-Hexachloroundecane, 100µg/mLin Isooctane, 1ml Price on request 96825 Alcohol & Glycol Mix Rev 1 Price on request S-4376-1-4.5AC ISO 18857-1 4-n-Nonylphenol (ring13C6), Internal standard 1 ng/µL, in acetone, 5mL Price on request