AA Standard #1 Back Catalog number: 59227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50104 ICP-MS Calibration Standard Price on request PN-69S 1,2,3,5,7,8-Hexachloronaphthalene, 1.2ml x 50ug/ml, nonane Price on request PN-72S 1,2,4,5,7,8-Hexachloronaphthalene, 1.2ml x 50ug/ml, nonane Price on request