1.16128

Malic Acid Test

reflectometric, 5.0-60.0 mg/L (malic acid), REFLECTOQUANT^®, for use with RQflex^® 20

• Synonym(s): Malic Acid chemical test strips, Malic Acid test strip for instrument reader
• UNSPSC Code: 41116116
• NACRES: NA.24

Properties

• Product Name: Malic Acid Test, reflectometric, 5.0-60.0 mg/L (malic acid), for use with REFLECTOQUANT^®
• description: quantitative
• Quality Level: 100
• specific analyte(s): malic acid
• reaction suitability: reaction type: enzymatic reaction
• measuring range: 5.0-60.0 mg/L (malic acid)
• application(s): beverage testing; food testing
• compatibility: RQflex^® 20, for use with REFLECTOQUANT^®
• detection method: reflectometric
• storage temp.: 2-8°C

Description

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^® 20.

Analysis Note

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

Other Notes

Replaces: 16128; 16128-1

Legal Information

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

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 2