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1.14756

Supelco

Chromate Test

colorimetric, 0.10-10 mg/L (Cr), 0.22-22 mg/L (CrO42-), for use with MQUANT®

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specific analyte(s)

chromate

Quality Level

measuring range

0.10-10 mg/L (Cr)
0.22-22 mg/L (CrO42-)

compatibility

for use with MQUANT®

detection method

colorimetric

storage temp.

15-25°C

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detection method

colorimetric

detection method

colorimetric

detection method

colorimetric

detection method

colorimetric

measuring range

0.10-10 mg/L (Cr)

measuring range

0.10-1.6 mg/L (Cr), 0.22-3.6 mg/L (CrO42-)

measuring range

0.3-5 mg/L (Cu)

measuring range

0.1-5 mg/L (Fe)

microbialanalysis
microbialanalysis

microbialanalysis
microbialanalysis

microbialanalysis
microbialanalysis

microbialanalysis
microbialanalysis

compatibility

for use with MQUANT®

compatibility

for use with MCOLORTEST®

compatibility

for use with MCOLORTEST®

compatibility

for use with MQUANT®

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

General description

Method: colorimetric with color-disk comparator 0.10 - 0.20 - 0.35 - 0.6 - 1.0 - 1.8 - 3.0 - 6.0 - 10 mg/l Cr 0.22 - 0.45 - 0.8 - 1.3 - 2.2 - 4.0 - 6.7 - 13 - 22 mg/l CrO MQuant®
The MQuant® Chromate test (formally MColortest®) measures chromium(VI) present in the sample as chromate or dichromate ions in wastewater and percolating water, groundwater and surface water, industrial water and drinking water.

Method
In weakly phosphoric solution chromium(VI) ions react with diphenylcarbazide to form chromium(III) and diphenylcarbazone, which form a red-violet complex. The chromate concentration is measured semiquantitatively by visual comparison of the color of the measurement solution with the color fields of a color disk. The test evaluates the color reaction based on the transmitted light method. So even turbid and colored water samples can be analyzed without further preparation.
The color disk is made of very durable, lightfast plastic, thus suitable for industrial areas and wet environments.
The test measures chromium(VI) present in the sample as chromate or dichromate ions in wastewater and percolating water, groundwater and surface water, industrial water and drinking water.

Analysis Note

Application test: conforms

Legal Information

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

Corrosion

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 3


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