Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677604 2-Quinoxalinecarboxylic acid, 100mg Price on request ACQ-SE02-030 Ethanol standard in serum,0.2g/L,serum, 3mL Price on request 59633 ICP-MS Mix #2 Price on request