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Chemetrics - R-9010 - Silica CHEMets Refill, Heteropoly Blue Method, Range: 0-1 & 1-10 ppm

  • MFR SKU: R-9010
  • ITEM #: 9499184
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ITEM #: 9499184
Silica (SiO 2 ) is the o x ide of silicon, the second most abundant element in the earth's crust. Silica is present as silicates in most natural waters. Typical concentrations lie between 1 and 30 mg/L. Higher concentrations may e x ist in brackish waters and brines. The silica content of water should be determined prior to its use in a variety of industrial applications. Silica can form a harmful scale on equipment and heat transfer surfaces, particularly steam turbine blades.
The Heteropoly...
ITEM #: 9499184
Silica (SiO 2 ) is the o x ide of silicon, the second most abundant element in the earth's crust. Silica is present as silicates in most natural waters. Typical concentrations lie between 1 and 30 mg/L. Higher concentrations may e x ist in brackish waters and brines. The silica content of water should be determined prior to its use in a variety of industrial applications. Silica can form a harmful scale on equipment and heat transfer surfaces, particularly steam turbine blades.
The Heteropoly Blue Method
References: APHA Standard Methods, 23rd ed., Method 4500-SiO2 D-1997. ASTM D 859-05, Silica in Water. USEPA Methods for Chemical Analysis of Water and Wastes, Method 370.1 (1983).
CHEMetrics' test method determines molybdate reactive silica. The heteropoly blue chemistry is employed. Silica reacts with ammonium molybdate under acidic conditions to produce heteropoly acids, which are then reduced to form a blue color. Phosphate interferences are masked with the addition of citric acid. Results are e x pressed as ppm (mg/L) SiO 2 .
Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Neutralizer Solution, Activator Solution, 25 mL sample cup, sample cup top, and instructions.
Shelf life = 11 months
Silica CHEMets Refill, Heteropoly Blue Method, Range: 0-1 & 1-10 ppm
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Chemetrics - R-9010 - Silica CHEMets Refill, Heteropoly Blue Method, Range: 0-1 & 1-10 ppm

  • Item #: 9499184
  • MFR SKU: R-9010
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