Cephalosporins Back Catalog number: 67041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96996 VPH Internal - Surrogate Standard Draft 01-2012 Price on request 11156.7-50-ME Perfluoroheptane sulfonic acid, potassium salt,50 µg/mL,MeOH,1mL, Price on request 95708 NJ EPH Aliphatic n-Hydrocarbons Price on request