Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681190 D10-Simazine, 10mg Price on request 9245.8-100-ME Acetaminophen-d4 (Paracetamol-d4),100 µg/mL,MeOH,1mL Price on request 3476.21-100MG Permethrin,neat,neat,100mg, Price on request