USGS 8022 Standard Back Catalog number: 93314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54235 Selenium (IV) Selenite, 1000µg/ml in Water, 100ml Price on request 59421 IC Anions Mix B Price on request 8468.6-K-IO Quinone, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 106-51-5 Price on request