Sudan 1, certified, 0.25g Back Catalog number: C16986101 Availability: In the manufacturer's stock Price on request - + Recommended 11806.12-50-NN 1,3,7-Trichlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL, Price on request 35021 EPA Method 502/524 Volatile Standard Price on request PCB-IS-A Mass-Labelled PCB Solution, 1.2ml x 1000ng/ml, nonane Price on request