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 VHG-V21-30-100 V21 Wear Metals Standard: 30µg/g in Hydrocarbon Oil, 100g Price on request E4026-500ML FE4026 Europium for AAS 1g/L ,500LPF Price on request E3026-100ML FE3026Maleate for IC 1g/L ,100LFL Price on request