Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1817.8-1G Cyclohexylacetic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 5292-21-7 Price on request C17774500 2,4,5-Trichlorophenol, certified, 0.1g Price on request 50298 ICP-MS Low Check Mix Price on request