Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8679.15 Tebutam, , Solvent-, Unit , # of units-, Cas.no. Price on request 73189 Diisoheptyl phthalate Price on request 9394.30-10MG 8:2 Tri-PAPS, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request