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 E1003-100ML FE1003 Silver ICP 1g/L ,100LPF Price on request E1143-100ML FE1143 Cesium ICP 10g/L ,100LPF Price on request E4057-100ML FE4057 Palladium for AAS 1g/L ,100LFL Price on request