NWTPH-Gx Surrogate Mix Back Catalog number: 51139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-123678-S 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane Price on request 45121 Fluorobenzene Price on request 59391 Chlorite (ClO2-) Price on request