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 E3041-100ML FE3041 Potassium for IC 1g/L ,100LPF Price on request E1395-100ML FE1395 Potassium ICP 10mg/L ,100LPF Price on request E2201-100ML FE2201 PE IS 8 ,100LPF Price on request