Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10637.12-50-T 1,2,3,4,7,8,9-Heptachlorodibenzofuran Price on request 40816 Benzo(k)fluoranthene Price on request 680168 Allyl methyl sulfide, 1ml Price on request