Purchase Quaternary Ammonium Compounds Test Strips 10-500ppm EM Quant (1 PK of 100)

  • Gallade Part#: 17920
  • Mfr Part#: 17920-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 100 Strips

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    Quaternary Ammonium Compounds Test Strips 10-500ppm EM Quant (1 PK of 100)

    Purchase Quaternary Ammonium Compounds Test Strips 10-500ppm EM Quant (1 PK of 100)

    Quaternary Ammonium Compounds Test Strips 10-500ppm EM Quant  (1 PK of 100) MSDS (Material Safety Data Sheet)

    EM Quant® Quaternary Ammonium Compounds, Catalog No. 17920

    1. Method

    Certain quaternary ammonium compounds react with an indicator, the color of which changes from yellow-green to turquoise-blue. The concentration of the quaternary ammonium compounds is measured semiquantitatively by visual comparison of the reaction zone of the analytical test strip with the fields of a color scale.

    2. Measuring Range and Number of Determinations

    Measuring Range/Color Scale Graduation Number of Determinations
    10 - 25 - 50 - 100 - 250 - 500 mg/l
    (as benzalkonium chloride)
    100

    3. Applications

    Sample Material:
    Disinfectant and rinsing solutions (clinical sector, private medical laboratories, food technologies)
    Cleansing agents
    Leveling agents (printers, dyers)

    This test measures the quaternary ammonium compounds usually present in these sample materials, in other words, e.g., alkylbenzyldimethylammonium chloride (benzalkonium chloride), cetyltrimethylammonium bromide (CTAB), hexadecylpyridinium chloride, dodecyltrimethylammonium bromide (lauryltrimethylammonium bromide, LTAB), octadecyltrimethylammonium chloride.

    4. Influence of Foreign Substances

    Protein concentrations lower than 1g/l do not interfere with the determination.

    5. Reagents and Auxiliaries

    The analytical test strips are stable at least up to the date stated on the pack when stored in the closed tube at +15 to +25°C.

    Package Contents:

    Tube containing 100 analytical test strips

    Other Reagents:

    Alkylbenzyldimethylammonium chloride (benzalkonium chloride), Cat. No. AX0528.

    6. Preparation

    Samples with a content of quaternary ammonium compounds higher than 500mg/l must be diluted with distilled water.

    7. Procedure

    Immerse the reaction zone of the analytical test strip in the measurement solution for approximately 2 seconds.

    Shake off excess liquid from the test strip and after 60 seconds determine with which color field on the label the color coincides most exactly.

    Read off the corresponding concentration value in mg/l. If an exact color match cannot be achieved, estimate an intermediate value.

    Notes on the Measurement:

    • The color of the reaction zone may continue to change after the specified reaction time has elapsed. This must not be considered in the measurement.

    • If the color of the reaction zone is equal to or more intense than the darkest color on the scale, repeat the measurement using fresh, diluted samples until a value of less than 500mg/l is obtained. This must then be multiplied by the corresponding dilution factor.

    8. Method Control

    To check analytical test strips, reagents, and handling:
    Dissolve 100mg of alkylbenzyldimethylammonium chloride in distilled water, make up to 1000ml with distilled water and mix. Content: 100mg/l. Analyze this standard solution as described in section 7.

    9. Note

    • Reclose the tube containing the test strips immediately after use.
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