Selenium (Se) Back Catalog number: 57134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 98863 Formaldehyde-DNPH Level 6 (10ug/mL) Price on request XA17320000AL Terbutryn, 100µg/mL in Acetonitrile, 1ml Price on request 676417 Fluazifop-butyl, 250mg Price on request