Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82402 EPA Method 8240A Mix #2 Price on request 1986.12-K-5ME Diphenyltin dichloride, 1000µg/mL, Solvent-methanol, Unit 5mL, # of units-1, Cas.no. 1135-99-5 Price on request 73344 6-Benzylaminopurine Price on request