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Malic Acid Test

reflectometric, 5.0-60.0 mg/L (malic acid), for use with REFLECTOQUANT®

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Malic Acid chemical test strips, Malic Acid test strip for instrument reader



Quality Level

specific analyte(s)

malic acid

reaction suitability

reaction type: enzymatic reaction

measuring range

5.0-60.0 mg/L (malic acid)


RQflex® 10 Plus
RQflex® 10
RQflex® 20
for use with REFLECTOQUANT®

detection method


storage temp.


General description

Method: reflectometric with test strips 5.0 - 60.0 mg/l Reflectoquant®
The Reflectoquant Malic Acid Test can be used for the determination of the decrease in malic acid concentration during the wine-making process. Malic acid (malate) is oxidized to oxalacetate by NAD under the catalytic effect of malate dehydrogenase. In the presence of diaphorase the NADH formed in the process reduces a tetrazolium salt to a red formazan that is determined reflectometrically on the RQflex.


Replaces: 16128; 16128-1

Analysis Note

function control: entspricht
- standard 1:
6.5 - 8.5 mg/l
- standard 2: 22.5 - 27.5 mg/l
- standard 3: 45.0 - 55.0 mg/l

Legal Information

REFLECTOQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
RQFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids



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