PCB Congener Surrogate Standard Mix Back Catalog number: 94568 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11415.11-10MG Levamisole hydrochloride,neat,neat,10mg, Price on request 675932 D5-Propachlor OA, 5mg Price on request 679807 Sulfachloropyridazine, 100 µg/ml, Methanol, 1ml Price on request