Lactic Acid Test

100

quantitative

lactic acid

reaction type: enzymatic reaction

3.0-60.0 mg/L (lactic acid)

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

reflectometric

2-8℃

Method: reflectometric with test strips 3.0 - 60.0 mg/l Reflectoquant^®
The Reflectoquant Lactic acid test measures total lactic acid (sum of D- and L-lactic acid in beverages, e.g. wine, beer and fruit/vegetable juice after dilution. Furthermore the test can be used for the determination of lactic acid in food after pretreatment. Lactic acid (lactate) is oxidized by nicotinamide adenine dinucleotide (NAD) under the catalytic effect of lactate dehydrogenase to a pyruvate. In the presence of diaphorase, the NADH formed in the process reduces a tetrazolium salt to a blue formazan that is determined reflectometrically on the RQflex.

function control: entspricht
Assay
- standard 1:
4.5 - 5.5 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