Herbicide Methyl Derivatives Back Catalog number: 91829 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-1613CS0.5 Extended Calibration/Low Level Solution ((CS1)/2) , 500ul, nonane Price on request 98691 BTEX (50 µg/mL) Price on request 79052 2,4’-DDT, 1000µg/ml in Hexane, 1ml Price on request