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

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

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

Reflectoquant® Formaldehyde Test Strips

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

  • Gallade Part#: 16989-1
  • Mfr Part#: 16989-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 50 Strips
  • Misc: HAZMAT UN1824 PGII

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    • Reflectoquant® Formaldehyde Test, Catalog No. 16989/1

    1. Method

    Formaldehyde reacts with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole to form a purple tetrazole derivative, the concentration of which is determined reflectometrically.

    2. Measuring Range and Number of Determinations

    Measuring Range1) Number of Determinations
    1.0 - 45.0mg/l HCHO 50

    1)for measurement of concentrations > 45.0 mg/l HCHO see section 6

    3. Applications

    This test also reacts to other aldehydes (e.g. acetaldehyde), albeit with lower sensitivity.

    Sample Material:

    Disinfectant and rinsing solutions (all types of hospital laboratories and private medical laboratories, laundries)
    Aqueous solutions

    4. Influence of Foreign Substances

    This was checked - in the case of interfering ions up to concentrations of 1,000mg/l - in solutions containing 20mg/l and 0mg/l HCHO. 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 %

    Al3+ 1,000 K+ 1,000 EDTA 1,000
    Ascorbate 100 Mg2+ 1,000 Anionic Surfactants1) 1,000
    BO23- 1,000 Mn2+ 100 Cationic Surfactants2) 1,000
    Ca2+ 100 Ni2+ 100 Nonionic Surfactants3) 1,000
    Citrate 1,000 NO2- 1,000 Na2SO4 10%
    Cl- 1,000 NO3+ 1,000    
    CO32- 1,000 Oxalate 1,000    
    Cr3+ 1,000 Pb2+ 100    
    CrO42- 1,000 PO43- 1,000    
    Cu2+ 1,000 SO32- 1,000    
    Fe2+ 100 Tartrate 1,000    
    Fe3+ 100        

    1)tested with Na-dodecyl sulfate

    2)tested with N-cetylpyridinium chloride

    3)tested with polyvinylpyrrolidone

    5. Reagents and Auxiliaries

    Please Note the Warnings on Labels!
    The analytic 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
    1 bottle of reagent Fo–1
    1 test vessel

    Other Reagents:

    EM Quant® Formaldehyde Test, Cat. No. 10036 measuring range 10-100mg/l HCHO

    6. Preparation

    • Check whether the formaldehyde content is within the measuring range
    • Use the EM Quant® Formaldehyde Test as a guide. Samples containing more than 45.0 mg/l HCHO must be diluted with distilled water.

    7. Procedure

    • Observe the instructions for the RQflex Reflectometer.

    The following applies to the Formaldehyde Test:

    Measurement procedure A. Stored reaction time: 120 sec.

    • Rinse the test vessel several times with the pretreated sample solution (15-30°C). Then fill to the 5-ml mark.
    • Add 10 drops of reagent FO–1 and swirl.
    • Remove 1 analytical test strip and immediately reclose the tube.
    • Press START button of the reflectometer and at the same time immerse both reaction zones of the test strip in the measurement solution for approx. 2 sec.
    • Vigorously shake off excess liquid from the test strip
    • As soon as the beeper sounds (5 sec. before end of reaction time), 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 in mg/l HCHO. 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 button will result in a false-high reading of the formaldehyde concentration.
    • At the end of each workday, cleanse the strip adapter thoroughly with water or ethanol.
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