EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1508.20-K-T 6-Ethylchrysene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 2732-58-3 Price on request 675937 D5-Acetochlor OA, 10mg Price on request 59799 Arsenic (As) Price on request