EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10777.8-K-IO Dibromostyrene (unspecified bromination),1000 µg/mL,isooctane,1mL, Price on request 681523 D6-Carbofuran-3-hydroxy, 10mg Price on request 12026.6-K-ME Isobutyl acetate,1000 µg/mL,MeOH,1mL, Price on request