624B Internal / Surrogate Standard Back Catalog number: 98628 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678295 Di-n-octyl phthalate, 250mg Price on request B426220 Bis(2,3-dichloropropyl) Ether, 25mg Price on request 55096 CWA Hexavalent Chromium Price on request