Sulfate (SO4-2), 1000µg/ml in Water, 100ml Back Catalog number: 54106 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended E2148-100ML FE2148 PE InstrCal-1 20 ,100LPF Price on request E1348-100ML FE1348 Antimony ICP 100mg/L ,100LPF Price on request E1424-100ML FE1424 Terbium ICP 10mg/L ,100LPF Price on request