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Macherey-Nagel, 91333, Quantofix Peroxide 1000, Box of 100 Strips auspowers_batchtwo Unpolished finishMacherey Nagel, 91333, Quantofix Peroxide 1000, Box of 100 Strips Test sticks for the semi quantitative determination of hydrogen peroxide (H 2 O 2 ) and peroxides in solutionsGradation of scale: 0 50 150 300 ppmThese test sticks have an additional warning test field, which changes color, when the concentration exceeds 2000 mg l, because, in such excessive concentration, a color change can occur, which corresponds to a much lower value on the color