Peroxide Test Strips 0.2-20.0 ppm Reflectoquant 1 PK *Requires RQflex 2 EMD# 16950-1

Purchase Peroxide Test Strips 0.2-20.0 ppm Reflectoquant 1 PK *Requires RQflex 2 EMD# 16950-1

Peroxide Test Strips 0.2-20.0 ppm Reflectoquant   1 PK *Requires RQflex 2 EMD# 16950-1 MSDS (Material Safety Data Sheet)

Reflectoquant® Peroxide Test Strips

Purchase Peroxide Test Strips 0.2-20.0 ppm Reflectoquant 1 PK *Requires RQflex 2 EMD# 16950-1

  • Gallade Part#: 169741
  • Mfr Part#: 16974-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 50 Strips

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  • Reflectoquant® Peroxide Test Strips, Catalog No. 16974/1

    1. Method

    Peroxidase transfers peroxide oxygen to an organic redox indicator. This produces a blue oxidation product, the concentration of which is determined reflectometrically.

    2. Measuring Range and Number of Determinations

    Measuring Range1) Number of Determinations
    0.2 - 20.0 mg/l H2O2 50

    1) for measurement of concentrations >20.0mg/l H2O2 see section 6

    3. Applications

    This test is suited for the determination of inorganic peroxides in aqueous solutions.

    Sample Material:

    Disinfectant and rinsing solutions (all types of hospital laboratories and private medical laboratories, food technology, laundries).

    Swimming pool 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 H2O2. 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 %


    NO3- 1,000 Free chlorine (hypochlorite) 1
    Bound chlorine (chloramine T) 1
    Total hardness 38°e

    5. Reagents and Auxiliaries

    Store originally sealed pack in refrigerator. Opened pack: store closed tube outside refrigerator in a cool and dry place. The analytic test strips are stable at least up to the date stated on the pack when stored in these conditions.

    Package Contents:

    Tube containing 50 analytical test strips

    Bar code strip

    Other Reagents:

    EM Quant® Peroxide Test, Cat. No. 10011, measuring range 5-25 mg/l H2O2

    6. Preparation

    Check whether the peroxide content is within the measuring range. Use the EM Quant® Peroxide Test as a guide. Samples containing more than 20.0 mg/l H2O2 must be diluted with distilled water.

    7. Procedure

    · Observe the instructions for the RQflex Reflectometer.

    The following applies to the peroxide test:

    Measurement procedure A. Stored reaction time: 15 sec.

    • 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 sample solution (15-30°C) for approx. 2 sec.
    • 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. The result is automatically stored.

    Note:

    • If the test strip is inserted into the adapter after the reaction time has expired, renewed depression of the START button may produce a false result
    • At the end of each workday, cleanse the strip adapter thoroughly with water or ethanol.

    8. Method Control

    To check analytical test strips, equipment and procedure:

    Make up a 10ml Perhydrol® 30% H2O2 (= 300,000mg/l H2O2) to 1L with distilled water and mix. Take 1ml of this solution, make up to 500ml with distilled water, and mix. Analyze the latter solution immediately (solution is not stable!) as described in section 7. The content of H2O2 determined should be 6mg/l.

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