ASTM D-4815 Calibration Mixes Back Catalog number: 51069 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1844.14-1G 4-n-Heptylbenzoic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 38350-87-7 Price on request 675450 Ampicillin trihydrate, 100mg Price on request 9087.8-100-IO Anisyl alcohol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 105-13-5 Price on request