Sulfite in White Wine Test Strips 10-200 ppm Reflectoquant Req. #16950-1 HAZMAT fee incl

Purchase Sulfite in White Wine Test Strips 10-200 ppm Reflectoquant Req. #16950-1 HAZMAT fee incl

Sulfite in White Wine Test Strips 10-200 ppm Reflectoquant Req. #16950-1 HAZMAT fee incl MSDS (Material Safety Data Sheet)

Reflectoquant® Sulfite Test in White Wine, EMD Chemicals Inc.

Purchase Sulfite in White Wine Test Strips 10-200 ppm Reflectoquant Req. #16950-1 HAZMAT fee incl

  • Gallade Part#: 167221
  • Mfr Part#: 16722-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 50 Strips
  • Misc: HAZMAT UN1824 PGII
  • CAS Number: Solution

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  • Reflectoquant® Sulfite Test in White Wine,
    Catalog No. 16722/1

    1. Method

    Sulfite ions react with a mixture of potassium hexacyanoferrate (II), zinc sulfate, and sodium nitroprusside to form a pink to brick-red compound, the concentration of which is determined reflectometrically.

    2. Measuring Range and Number of Determinations

    Measuring Range Number of Determinations
    10 - 200mg/l SO32- 50

    3. Applications

    This test can be used only for white wines. In the case of red wines, false-high results occur due to the intrinsic coloration.

    4. Influence of Foreign Substances

    This was checked - in the case of interfering ions up to concentrations of 1,000mg/l - in solutions containing 100 and 0mg/l SO32-. 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 %
    Ag+ 10
    Al3+ 100
    Ascorbate 100
    BO33- 1,000
    Br- 1,000
    Ca2+ 1,000
    Cd2+ 1,000
    Citrate 10
    Cl- 1,000
    CN- 10
    CO32- 100
    CrO42- 10
    Cu2+ 10
    Fe2+ 1
    Fe3+ 1
    K+ 1,000
    Mg2+ 1,000
    Mn2+ 10
    NH4+ 1,000
    Ni2+ 100
    NO2- 1,000
    NO3- 1,000
    Oxalate 1,000
    PO43- 100
    S2O32- 1,000
    Tartrate 1,000
    Zn2+ 10
    EDTA 100
    Anionic Surfactants1) 1,000
    Cationic Surfactants2) 1,000
    Nonionic Surfactants3) 1,000
    Oxidizing Agents (H2O2) 10
    NaCl 2.5%
    Na2SO4 2.5%

    1) tested with Na-dodecylsulfate

    2) tested with N-cetylpyridinium chloride

    3) tested with polyvinylpyrrolidone

    5. Reagents and Auxiliaries

    Please note the warnings on the package materials!
    The analytical test strips are stable up to the date stated on the pack when stored in the closed tube ath +2 to +8°C.

    Package Contents:

    Tube containing 50 analytical test strips
    Bar code strip
    1 bottle of reagent SO3-1
    1 test vessel with stopper

    Other Reagents:

    pH-indicator strips non-bleeding Universal Indicator pH 0-14, Catalog No. 9590
    Sodium sulfite anhydrous GR, Catalog No. SX0785
    Titriplex® III GR, Catalog No. 1.08418

    6. Preparation

    • Determination of free sulfite:
      No sample pretreatment necessary
    • Determination of total sulfite:
      Fill the test vessel with the sample solution to the 5ml mark, add 10 drops of reagent SO3-1 and swirl.
      After addition of the reagent, the pH must be with the range 8-9.
      Check with Universal Indicator strips.
      If pH is lower than 8, add reagent SO3-1 dropwise.

    7. Procedure

    • Observe the manual for the RQflex Reflectometer.
      The following applies to the Sulfite Test in white wine:
      Measurement procedure A:
      Stored reaction time: 30 sec.
    • Remove 1 analytical test strip and immediately reclose the tube.
    • Press START button of the reflectometer and - this is imperative - at the same time immerse both reaction zones of the test strip in the measurement solution (5-30°C) for approximately 2 seconds.
    • Vigorously shake off excess liquid from the test strip.
    • As soon as the beeper sounds (5 seconds 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 SO32-.
      The result is automatically stored.

    Note:
    At the end of each work day, cleans the strip adapter thoroughly with water or ethanol.

    8. Method Control

    To check analytical test strips, equipment and procedure:

    Dissolve 0.157g sodium sulfite and 0.040g Titriplex® III in distilled water make up to 100ml and mix. SO32- concentration 1,000mg/l. Dilute this standard solution to 100mg/l SO32– and analyze as described in section 7.

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