Semi-Volatile Standard Back Catalog number: 92947 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94597 PCB Congeners Price on request 50040 Potassium Nitrate Price on request 8647.12-50-NN 1,2,3,8,9-Pentachlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL, Price on request