EPA Method 525 Spike C Back Catalog number: 92314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8018.13-K-IO Xanthone, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 90-47-1 Price on request 94977 Herbicide Methyl Esters Mix Price on request ES-5353 Toxaphene Congeners (Parlar 26, 50 and 62), 2µg/ml in Nonane, 1,2ml Price on request