Diisopropylnaphthalene (mixture of isomers), certified, 0.1g

Pure ß-Glucuronidase from overexpressing recombinant E. coli ,>50,000 u/ml,50% aqueous glycerol soln,5mL

Methylarsonic acid, 100mg

2,2’,6,6’-Tetrachlorobiphenyl (54)