Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676542 Bis(2-ethylhexyl) phthalate, 500mg Price on request 71406 Tetramethylurea Price on request HCPN Hexachloro(phenyl)norbornene, 1.2ml x 50ug/ml, toluene Price on request