1.16128 Supelco

Malic Acid Test

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



Quality Level   100
measuring range   5.0-60.0 mg/L (malic acid)
compatibility   for use with REFLECTOQUANT®
detection method   reflectometric
storage conditions   Store at +2°C to +8°C.


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

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


Application Notes: Reflectometry – Malic Acid in Red and White Wine, Young Wine and Must

Catalog No. 116128 Reflectoquant® Malic Acid Test Catalog No. 117246 Reflectometer RQflex® 20 Catalog No. 107302 Polyvinylpolypyrrolidon Divergan® RS Catalog No. 10311644 Filter folded, e.g. Schleich...
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