EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0620.30-100-IO Onocerane I (8ß(H),14 alpha(H)), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 56297-92-8 Price on request 679127 D5-Pyraflufen-ethyl, 5mg Price on request 2534.12-100MG (2RS)-2-(4-n-Propylphenyl)propanoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 3585-47-5 Price on request