Direct Red 28, certified, 0.1g Back Catalog number: C12965400 Availability: In the manufacturer's stock Price on request - + Recommended DD-237-S 2,3,7-Trichlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 59174 QC for Chloride and Sulfate Anions Price on request 94474 Semi-Volatile Mix #4 Price on request