Pesticides Calibration LC-MS/MS Back Catalog number: 98680 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11253.14-100-AN Diflubenzuron-d4 (4-chlorophenyl-d4),100 µg/mL,acetonitrile,1mL, Price on request XE-2367-S 2,3,6,7-Tetrachloroxanthene , 1.2ml x 50ug/ml, toluene Price on request 10276.18-5MG (±)-Betaxolol-d7 hydrochloride (N-iso-propyl-d7) Price on request