WS Boron Back Catalog number: 55217 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-G Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 95273 Chlorinated Pesticides Price on request 675305 Terbutryn, 100 µg/ml, Acetonitrile, 5ml Price on request