Sulfide (S), 1000 µg/mL in Water, 3 x 20ml Back Catalog number: 54139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended E3001-100ML FE3001 Ammonium for IC 1g/L ,100LPF Price on request E1144-100ML FE1144 Copper ICP 10g/L ,100LPF Price on request E4039-500ML FE4039Lanthanum for AAS 1g/L ,500LPF Price on request