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 E1108-100ML FE1108 Potassium ICP 1g/L ,100LPF Price on request E1178-100ML FE1178 Sulfur ICP 10g/L ,100LPF Price on request E4075-100ML FE4075 Tellurium for AAS 1g/L ,100LPF Price on request