GFAA Initial Calibration Verification Back Catalog number: 53315 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 33971 tert-Amyl methyl ether Price on request 33441 n-Tetradecane Price on request 11279.20-100-AN (+/-)-Pyriproxyfen-d4 (pyridyl-d4),100 µg/mL,acetonitrile,1mL, Price on request