525 Internal Standard Back Catalog number: 94212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-124-S 1,2,4-Trichlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 59574 Anions Mix #2 Price on request C-157N 2,3,3',4,4',5'-Hexachlorobiphenyl, 5mg Price on request