EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1138.18-K-ME n-Octadecane Price on request 20025 CLP Pesticide Standard Mix A - Low Point Price on request 1344.12-25MG 2,6-Dimethylnaphthalene-d12,neat,neat,25mg, Price on request