EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679819 Sulfapyridine, 100 µg/ml, Methanol, 1ml Price on request 98183 Pesticide Standard Price on request 9918.11-100-ME 1-Undecene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 821-95-4 Price on request