GFAA Initial Calibration Verification Back Catalog number: 52315 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70593 Chlorpyrifos methyl Price on request 10249.13-50-ME 2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled) Price on request 1441.14-1G 2,6-Di-sec-butylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 5510-99-6 Price on request