Internal Standard ASTM D-5307 Back Catalog number: 51124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1149.29-K-IO n-Nonacosane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 630-03-5 Price on request C16000500 Pethoxamid, 100mg Price on request 8815.12-100-IO 2,3,3',4-Tetrahlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 74338-24-2 Price on request