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 E1392-100ML FE1392 Holmium ICP 10mg/L ,100LPF Price on request E4073-500ML FE4073 Strontium for AAS 1g/L ,500LPF Price on request E2105-100ML FE2105 PE IS-3 7 ,100LPF Price on request