Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91120 1-Methylnaphthalene-d10 Price on request 673526 Chlorpyrifos, 100 µg/ml, Ethyl acetate, 5ml Price on request A637775 5a-Androstenone, 5mg Price on request