Sulfate (SO4-2), 1000µg/ml in Water, 100ml Back Catalog number: 54106 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended E2150-100ML FE2150 PE InstrCal-3 5 ,100LPF Price on request E1420-100ML FE1420 Samarium ICP 10mg/L ,100LPF Price on request E1513-100ML FE1513 Chromium(VI) ICP 1g/L ,100LPF Price on request