Selenium (Se) Back Catalog number: 57234 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0641.24-100-IO 5ß(H)-Cholane, 100µg/ml in Isooctane, 1ml Price on request 3521.7-100-AN Triclopyr Price on request 71008 Tris(2,3-dibromopropyl)phosphate Price on request