Sulfate (SO4-2), 1000µg/ml in Water, 500ml Back Catalog number: 54506 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended E1309-100ML FE1309 Cadmium ICP 100mg/L ,100LPF Price on request E1061-100ML FE1061 Tellurium ICP 1g/L ,100LPF Price on request E1053-100ML FE1053 Scandium ICP 1g/L ,100LPF Price on request