Isofenphos-methyl, 100 µg/ml, Toluene, 1ml Back Catalog number: 677987 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 81403 Chlorpyrifos, 1000µg/ml in Hexane 1ml Price on request 70957 Demeton [O & S Isomers] Price on request 94909 Herbicide Acid Standard Price on request