Chlorine Test Strips 4-120 ppm EM Quant (1 PK of 100) HAZMAT fee incl

Purchase Chlorine Test Strips 4-120 ppm EM Quant (1 PK of 100) HAZMAT fee incl

Chlorine Test Strips 4-120 ppm EM Quant (1 PK of 100) HAZMAT fee incl MSDS (Material Safety Data Sheet)

10043 EM Quant® Chlorine Test

Purchase Chlorine Test Strips 4-120 ppm EM Quant (1 PK of 100) HAZMAT fee incl

  • Gallade Part#: 10043
  • Mfr Part#: 10043-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 100 Strips
  • Misc: HAZMAT UN1993 PGIII FLAMMABLE LIQUID

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    • EM Quant® Chlorine Test, Catalog No. 10043

    Test strips and reagent for the detection and semi-quantitative determination of chlorine

    General

    The Chlorine Test is a rapid, semi-quantitative exploratory test for chlorine in effluent, e.g. from electroplating works. It can be used to control and optimize the use of chlorine in the processes listed below (see also under Cyanide Test) as well as for checking the use of chlorinated disinfectants.

    The use of hypochlorite as a means of detoxifying cyanide-bearing effluent is a well proven economical procedure that is employed on a large scale. 12% sodium hypochlorite bleaching solution or chlorine and sodium hydroxide solution are used to convert cyanide to cyanate, which is slowly hydrolyzed to ammonium carbonate.

    Principle of the Method

    Chlorine reacts with cyanide ions to form cyanogen chloride, which breaks open the ring of pyridine to give glutacondialdehyde. The barbituric acid derivative in the reaction zone of the test strip reacts with the dialdehyde to produce a red polymethine dye. The pH is optimized through addition of a buffer mixture.

    Graduation

    0 -4 -12 - 40 - 120mg/l (ppm) Cl2

    Directions

    1. Rinse the measuring vessel with some of the sample and fill to the 5ml mark.
    2. Determine the pH (e.g. with pH indicator strips).
    3. If the pH is greater than 9, add 25% sulfuric acid dropwise to adjust to pH 6-7.
    4. Add one level measuring spoon of reagent 1 (buffer mixture) and dissolve.
    5. Add 5 drops of chlorine reagent 2 and shake.
    6. Immediately immerse the reaction zone in the solution for 30 seconds.
    7. Remove the test strip, wipe off excess liquid by stroking the edge of the strip against the rim of the vessel and compare the reaction zone with the color scale within 10 seconds.

    Safety Precautions

    Keep Reagent 2 (contains potassium cyanide and pyridine) away from the skin. In the event of contact, rinse well immediately with plenty of water. Seek immediate medical attention of substance enters the eye.

    Interference

    If 5-10mg/l (ppm) of bromide or iodide are present, the coloration is weaker or absent altogether.

    At concentrations of 50mg/l (ppm), nitrite slightly intensifies the color, while permanganate and chromate reduce its intensity.

    In strongly acidic or alkaline solutions, interference may occur if the buffer added does not have sufficient buffering capacity. This is why it is important to adjust to pH 6-7 if the water is too acidic or alkaline. Examples: to a test solution equivalent to 4% sodium hydroxide solution, add approximately 0.8ml of 25% sulfuric acid to optimize the pH. For a test solution equivalent to 10% sodium hydroxide solution, approximately 2ml of 25% sulfuric acid is required. The increase in volume results in a slightly lower value than the color scale would normally show.

    Standard (1000mg/l)

    Add approximately 1ml of sodium hypochlorite solution (approximately 13%) to approximately 100ml of distilled water and accurately determine the concentration by titrimetry.

    Dilute as appropriate to give the required concentration.

    Package Size

    10043 EM Quant® Chlorine Test

    Chlorine Test for 100 determinations; reagents and accessories included.
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