Molybdenum Test Strips 1-45 ppm Reflectoquant 1 PK *Req RQflex 2 #16950-1 HAZMAT fee incl

Purchase Molybdenum Test Strips 1-45 ppm Reflectoquant 1 PK *Req RQflex 2 #16950-1 HAZMAT fee incl

Molybdenum Test Strips 1-45 ppm Reflectoquant   1 PK *Req RQflex 2 #16950-1 HAZMAT fee incl MSDS (Material Safety Data Sheet)

Reflectoquant® Molybdenum Test Strips

Purchase Molybdenum Test Strips 1-45 ppm Reflectoquant 1 PK *Req RQflex 2 #16950-1 HAZMAT fee incl

  • Gallade Part#: 16979-1
  • Mfr Part#: 16979-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 50 Strips
  • Merck Index: 13.9006
  • Misc: HAZMAT UN2967 PGIII CORROSIVE
  • CAS Number: 5329-14-6

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  • Reflectoquant® Molybdenum Test Strips, Catalog No. 16979/1

    1. Method

    In acidic solutions, molybdenum reacts with toluene-3,4-dithiol to form a green complex, the concentration of which is determined reflectometrically.

    2. Measuring Range and Number of Determinations

    Measuring Range1) Number of Determinations
    1.7 - 75.1 mg/l MoO42- 50

    1) for conversion factors see section 8

    for measurement of concentrations > 45.0 mg/l Mo see section 6

    3. Applications

    Sample Material:

    Boiler water, cooling water

    4. Influence of Foreign Substances

    This was checked - in the case of interfering ions up to concentrations of 1,000 mg/l - in solutions containing 15 mg/l and 0 mg/l Mo. The concentrations of foreign substances given in the table lie below the limit at which the determination is interfered with:

    Concentrations of Foreign Substances in mg/l or %

    Cu2+ 10 S2- 1
    NO3- 1,000 SiO32- 1,000
    PO43- 1,000 Total Hardness 38%

    5. Reagents and Auxiliaries

    Please Note the Warnings on Labels!
    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 50 analytical test strips

    Bar code strip

    2 bottles of reagent Mo-1

    Other Reagents:

    EM Quant® Molybdenum Test, Cat. No. 10049, measuring range 5-250 mg/l Mo
    colorpHast® Universal indicator strips pH 0-14, Cat. No. 9590
    Titristar® Sodium hydroxide solution 10% GR, Cat. No.SX0607U
    Titristar® Sulfuric acid 25%, Cat. No. SX1243M
    CertiPUR® Molybdenum standard solution ready for use, 1,000 mg/l Cat No. 1.70227

    6. Preparation

    • Check whether the molybdenum content is within the measuring range

    Use the EM Quant® Molybdenum Test as a guide. Samples containing more than 45.0 mg/l Mo must be diluted with distilled water.

    • · The pH must be within the range 4-6. Check with universal indicator strips. If pH is lower than 4, add sodium hydroxide solution dropwise; if greater than 6, add sulfuric acid dropwise.

    7. Procedure

    • Observe the instructions for the RQflex Reflectometer.

    The following applies to the Molybdenum Test:

    Measurement procedure A. Stored reaction time: 60 sec.

    • Rinse the test vessel several times with the solution to be tested (15-35°C). Then fill to the 10-ml mark.
    • Add 2 level red microspoons (in the cap of the Mo-1 bottle) of reagent Mo-1 and swirl to dissolve.
    • Remove 1 analytical test strip and immediately reclose the tube.
    • Press START button of the reflectometer and at the same time place the test strip in the measurement solution so that both reaction zones are completely wetted.
    • As soon as the beeper sounds (5 sec before end of reaction time), remove the test strip from the solution and shake off excess liquid. then insert the test strip all the way into the strip adapter with the reaction zones facing the display.
    • Read off the result from the display. The result is automatically stored.

    Notes:

    • If the test strip is inserted into the adapter after the reaction time has expired, renewed depression of the START key will result in a false-high reading of the molybdenum concentration.
    • After every 5 measurements and at the end of each workday, the strip adapter must be cleansed thoroughly with water or ethanol.

    8. Conversions

    units required = units given x conversion factor

    Units Required = Units Given x Conversion Factor
    mg/l Mo mg/l MoO42– 0.600

    9. Method Control

    To check analytical test strips, equipment and procedure:

    Dilute molybdenum standard solution to 10 mg/l Mo and analyze as described in section 7.

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