Primary Freon Standard

2,2',3,4,4',5,5'-Heptachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

3',4'-Dichloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

Dodecene-1LAS, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 25155-30-0