Selenium (Se) Back Catalog number: 56134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674159 4,4'-DDT, 100mg Price on request 674047 Propyzamide, 250mg Price on request 679317 Carbophenothion-methyl, 100 µg/ml, Methanol, 1ml Price on request