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 E4001-100ML FE4001 Aluminium for AAS 1g/L ,100LPF Price on request E3015-100ML FE3015 Dethanolamine IC 1g/L ,100LPF Price on request E1314-100ML FE1314 Copper ICP 100mg/L ,100LPF Price on request