Barium (Ba) Back Catalog number: 57156 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 4M134 2,2',3,3',5,6-Hexachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 91036 1-Methyl-2-pyrrolidinone Price on request 19042 EPA Method 508 Surrogate Standard Price on request