Chlorpyrifos-methyl, 250mg Back Catalog number: 677939 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 97179 Internal & Surrogate Standard 8260B Price on request 79287 gamma-BHC Price on request 680465 alpha-Methylstyrene, 200 µg/ml, Methanol, 1ml Price on request