Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679805 Sulfabenzamide, 100 µg/ml, Methanol, 1ml Price on request 50033 ICP-MS Verification Standard Price on request DF-2346-S 2,3,4,6-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request