Instrument Standard 6 Back Catalog number: 53082 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended I789183-250MG Isobutyric-d7 Acid, 250mg Price on request 70167 Endosulfan I Price on request EPA-8290STN Native Stock PCDDs and PCDFs, 1.2ml, nonane Price on request