EPA Method 8260B Surrogate Standard Back Catalog number: 23112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96495 Hydromorphone-D3 Price on request 10216.10-10MG n-Propyl 4-hydroxybenzoate-2,3,5,6-d4, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1219802-67-1 Price on request R700852-1MG Roxithromycin-d7, 1mg Price on request