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 E3034-100ML FE3034 Nitrite for IC 1g/L ,100LPF Price on request E1197-100ML FE1197 Ytterbium ICP 10g/L ,100LPF Price on request E4064-500ML FE4064 Antimony for AAS 1g/L ,500LPF Price on request