EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended YA14470100AL Isoproturon D6 (dimethyl D6), 1000µg/mL in Acetonitrile, 1ml Price on request 50405 Custom Mix Price on request 0327.22-100-TX5 Indeno[1,2,3,-cd]fluoranthene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 210487-06-2 Price on request