Merck hydrogen peroxide strip

Briefly dip the test strip in water, shake off surplus liquid and expose to the air for 10 minutes. If a dark blue to brown or a green to brown color is produced, the peroxide concentration is too high for the color scale. It is a natural substance which can be found in trace amounts in rain and snow. Notes If a dark blue to brown or a green to brown color is produced, the peroxide concentration is too high for the color scale. The color depth formed is rendered more intense in direct proportion to the thickness of the paper. Usually, the first impregnating solution contains the colorimetric indicator dissolved in a volatile organic solvent. Reproducibility of results can be affected by a number of variables which have heretofore not been generally recognized and thus not controlled.
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EMD Millipore MQuant Peroxide Test Strips :Testing and Filtration:Food

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Peroxide Test Strips 0.5-25 ppm EM Quant (1 PK of 100) 10011-1 EMD

However, the danger is often underestimated when ethers are being distilled, resulting in explosions which could really be avoided. Test strips and reagent for the detection and semi-quantitative determination of peroxides. It is generally recognized that ether peroxides are dangerous. In dairies checks must be made on the diethyl ether peroxide concentration of the extraction ether used for fat determinations and on hydrogen peroxide levels in salt baths, peroxide-containing disinfectants and other liquids.
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Specifications

View All Cell Analysis. Alternatively, immerse briefly in distilled water. The Peroxide Test is extremely useful for performing rapid, reliable, semi-quantitative checks for the presence of hydroperoxides and ether peroxides. It is advisable to test ethers regularly and whenever they are about to be used.
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The Peroxide Test is extremely useful for performing rapid, reliable, semi-quantitative checks for the presence of hydroperoxides and ether peroxides. It is important to obtain reproducible results that a reproducible water film be deposited; this is best achieved when the relative humidity and temperature of the moist gas are constant. Immerse a test strip for approximately 1 second. H 2 O 2 may not work if the water has a high dissolved mineral or organic content. The color depth formed is rendered more intense in direct proportion to the thickness of the paper. In these cases preliminary testing is recommended, since varying the test conditions sometimes enables a reproducible result to be obtained, or at least a qualitative indication that peroxides are present. It is well suited to the routine checking of simple ethers such as diethyl ether ethyl ether , tetrahydrofuran and dioxan.
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