EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679982 (-)-Nicotine, 100 µg/ml, Methanol, 1ml Price on request 675841 4,4'-DDE, 100 µg/ml, Toluene, 5ml Price on request 50624 Nitrite (NO2-) as N Price on request