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 E1502-100ML FE1502 Chromium(III) ICP 10mg/L ,100LPF Price on request E1024-100ML FE1024Germanium ICP 1g/L ,100LPF Price on request E3033-100ML FE3033 Nitrilotriacetat IC 1g/L ,100LFL Price on request