Sulfate water analysis test kits

Thursday, 16 January, 2003 | Supplied by: Edwards Group Pty Ltd


The CHEMetrics Sulfate Vacu-vials Test Kit (K-9203) for water analysis features self-filling Vacu-vial ampoules, which the user simply snaps in the sample. The Sulfate Vacu-vials test method employs the barium sulfate method. Sulfate ion reacts with barium chloride in an acidic solution to form a suspension of barium sulfate crystals of uniform size. The resulting turbidity is proportional to the sulfate concentration of the sample and can be read on any spectrophotometer that accepts a 13 mm cell.

Unlike other turbidimetric tests in which the barium sulfate suspension can be unstable above 40 ppm, CHEMetrics' reagent formulation allows uniform crystal size and stable suspensions up to 70 ppm. CHEMetrics' 0-70 ppm sulfate test kit requires no accessory reagents or sample preparation. Sulfate is widely distributed in nature and may be present in natural water in a broad range of concentrations. Mine drainage wastes may contribute to large amounts of SO42- through pyrite oxidation and use of sulfuric acid. Sulfate levels in drinking waters are generally believed to affect taste above 250 ppm as calcium sulfate, and above 400 ppm as magnesium sulfate. The presence of sulfate is necessary to produce desired flavors in the brewing industry. Levels of sulfates above 200 ppm increase the amount of lead dissolved from lead pipes. The principal problem associated with sulfate ions in water is the possibility of calcium sulfate scale formation in boilers, cooling systems and ion exchangers.

Online: www.edwardsco.com.au
Phone: 02 9820 2122
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