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 N-13013-250MG Phenyl mercuric chloride(Technical), 250mg Price on request VHG-SMIN-5000-100 Sulfur, 5000µg/g (0.500 wt%) in 75 cSt Mineral Oil, 100ml Price on request 52145A Method 200.8/1638/1640 Internal Standard, 10µg/ml in 2%-HNO3, 4x25ml Price on request