4-OH-Pyriproxyfen (4'-OH-Pyr), 10mg Back Catalog number: 675366 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-D40 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request 50330 Cation Mix #1 Price on request 70594 Chlortoluron Price on request