Spiking Standard #2 Back Catalog number: 50756 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683821 Stevioside, 10mg Price on request 677372 Propachlor ESA sodium salt, 100µg/ml, Acetonitrile, 1ml Price on request 674585 Dextromethorphan hydrobromide monohydrate, 250mg Price on request