EPA Method 8260 Internal Standard - Revised Back Catalog number: 21013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79550 1,1,1-Trichloroethane Price on request 91182 Propylene glycol Price on request 677488 D8-Ciprofloxacin hydrochloride hydrate, 100 µg/ml, Price on request