EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended SC-396749 2-hydroxy-3-methylpentanoic acid, >95%, 50mg Price on request 2326.12-10-IOX10 Arochlor 5460 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 11126-42-4 Price on request 674547 Neburon, 100mg Price on request