Wisconsin DNR GRO Standard Back Catalog number: 90379 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31004 EPA Method 500 Series Internal Standard Price on request 12002.34-K-IO Di-n-ditridecyl phthalate,1000 µg/mL,isooctane,1mL, Price on request 11925.24-K-ME Eplerenon,1000 µg/mL,MeOH,1mL, Price on request