Selenium (Se) Back Catalog number: 57034 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59118 Fluoride (F-) Price on request 12022.6-K-ME 1-Methoxy-2-propyl acetate,1000 µg/mL,MeOH,1mL, Price on request 59468 pH 4.0 Standard @ 25°C Price on request