Malic Acid Test

100

quantitative

malic acid

reaction type: enzymatic reaction

5.0-60.0 mg/L (malic acid)

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

reflectometric

2-8℃

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

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

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

11 - Combustible Solids

WGK 2