Sulfate Test Strips 400-1600 ppm EM Quant (1 PK of 100)

Purchase Sulfate Test Strips 400-1600 ppm EM Quant (1 PK of 100)

Sulfate Test Strips 400-1600 ppm EM Quant  (1 PK of 100) MSDS (Material Safety Data Sheet)

10019 EM Quant® Sulfate Test

Purchase Sulfate Test Strips 400-1600 ppm EM Quant (1 PK of 100)

  • Gallade Part#: 10019
  • Mfr Part#: 10019-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 100 Strips

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  • EM Quant® Sulfate Test, Catalog No. 10019

    Test strips and reagent for the detection and semi-quantitative determination of sulfate ions

    General

    The Sulfate Test is a rapid exploratory test. It can be used togive a rough estimation of the sulfate ion content of drinking and industrial water, as well as of effluent discharged, for instance, from electroplating works and leathergoods manufacturers. Pollutedground and surface waters may contain 300 or more mg of sulfate per liter.

    Principle of the Method

    The four reaction zones sealed on to the strip contain different amounts of red thorin barium complex. The strips progressively turn yellow when the right concentration (of sulfate ions) is present.

    Graduation

    0 - 400 - 800 - 1200 - 1600mg/l (ppm) SO42–.

    Directions

    1. Immerse a test strip in the sample solution (not running water) for 1 second so that all four reaction zones are thoroughly moistened.
    2. Remove the test strip,gently shake off any surplus liquid, wait 2 minutes and compare the reaction zones with the color scale.

    Note

    The sample solution should have a pH of between 4 and 8. Acidic solutions (pH <4) must be buffered with sodium acetate. Alkaline solutions (pH >8) must be adjusted by adding ascorbic acid or tartaric acid.

    Evaluating the color change

    Number of reaction zones for light red Number of reaction zones for yellow Sulfate content
    mg/l (ppm)
    Color change within the range mg/l (ppm)
    4 0 below 200  
    3 1 above 400 300-400
    2 2 above 800 600-800
    1 3 above 1200 1000-1200
    0 4 above 1600 1300-1600

    The color changes from light red to yellow within the ranges listed. If the test solution has a sulfate content just at the upper limit of one of the color change ranges, the reaction zone is still slightly red at both edges. At higher concentrations the edges also turn yellow.

    Aggressivity to Concrete

    Several degrees of aggressivity are defined forground water depending on the amount of sulfate it contains.

    200 - 600mg/l = slightly aggressive

    600 -1600mg/l = strongly aggressive

    above -3000mg/l = very strongly aggressive

    Influence of Anions

    The following ions can give a false positive reaction in which the reaction zone turns orange:

    >1000mg/l BrO–3 >800mg/l ClO–3
    >400mg/l CrO4–2 >50mg/l CN
    >400mg/l [Fe(CN)6]–3 >25mg/l SO–2
    >1000mg/l SeO3–2 >25mg/l SO2–3
    >1000mg/l S2O2–4 >500mg/l S2O3–5
    >500mg/l citrate

    An interfering violet coloration due to MnO–4 can be eliminated by adding a few crystals of ascorbic acid to 5ml of the solution and then shaking.

    Influence of Cations

    Interfering colorations that prevent the detection of sulfate occur in the presence of the following ions:

    >100mg/l Al3+ (orange-red)

    >100mg/l Cr3+ (brown)

    >10mg/l Cu2+ (orange-brown)

    >100mg/l VO2+ (orange-brown)

    These ions can easily be removed with Amberlite® IR-120 ion exchanger. The ion exchanger must first be loaded with sodium ions. Fill aglass column (2-4 cm in diameter) with 10g Amberlite® IR-120 ion exchanger. Allow 50ml 1 mmol/l hydrochloric acid, 100ml distilled water, 50ml 1 mol/l sodium hydroxide solution to drip slowly through the column in the ordergiven followed by distilled water until a pH of 6-7 is obtained. Fill aglass column (0.5-1 cm in diameter) with 2g of the prepared cation exchanger and allow 10ml of the test solution, which should not contain more than 2g/l of the cation to be separated to run through slowly at a rate of approximately 1 drop/second. Test the eluate for sulfate as described above.

    Package Size

    10019 EM Quant® Pack of 100 test strips

    Sulfate Test

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