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 VHG-SMIN-1500-100 Sulfur, 1500µg/g (0.150 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 SCP150-100-115 CONOSTAN 1000ppm Standard, Na, 50g Price on request