Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674954 Methoxychlor, 100mg Price on request 0363.8-100MG 2-n-Butylthiophene, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1455-20-5 Price on request 50603 ICP Mix - 0.5 µg/mL Price on request