EPA Method 500 Series Internal Std #4 Back Catalog number: 32003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MCDE-141 2,2',3,4,5,5'-Hexachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 59729 ICP Multi-element Standard Price on request 675612 Fluotrimazole, 100 µg/ml, Ethyl acetate, 5ml Price on request