EPA Method 508.1 & 525.2 Pesticide Standard Back Catalog number: 91970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59731 ICP Multielement Standard Price on request 679953 1,3,5-Trichlorobenzene, 10 µg/ml, Acetonitrile, Price on request 12114.4-10MG Metformin-d6 hydrochloride (dimethyl-d6),neat,neat,10mg, Price on request