EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2661.12-10-IO Arochlor 1232, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11141-16-5 Price on request 9321.14-5MG Diclofenac-d4 (phenyl-d4),neat,neat,5mg Price on request 675230 2,4-D, 100 µg/ml, Acetonitrile, 5ml Price on request