Determination of Alcohol content in Beer
The test allows to measure alcohol in beer, which is an important quality parameter.
Features and Benefits of the determination of Alcohol content in Beer with CDR BeerLab®
- the Method is simpler and faster than reference methods (hydrostatic balance)
- it does not need specific laboratory facilities, nor the dexterity of chemical analyst experts
- the results are correlated with the reference methods
- the test featires high reliability and repeatability
The analysis with CDR BeerLab® facilitates very much carrying out the quality control related to alcohol content in the beer produced.
The systems to test Alcohol in beer and wort
|CDR BEERLAB®||CDR BEERLAB® JUNIOR|
Beer and Wort:
Beer and Wort:
|Simultaneous Sample Analyses||16||3|
|Multiple Analyses on a Sample||–|
Test type: End Point.
Time testing: one test 6 minutes.
Are possible test sessions with several samples, up to 16 tests for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.
Correlation with reference methods
Samples were analysed for Alcohol using both the CDR BeerLab® and the UKAS accredited gas chromatography (GC) method (Campden BRI Method AM/0 18 based on IOB Methods of Analysis, 1997, 9.10)
Ethanol, in an alkaline environment, is oxidized through an enzymatic reaction and converted in acetic aldehyde in presence of NAD+, which in turns produces NADH. The increase of the absorbance, measured at 366 nm (end-point), is proportional to the concentration of ethanol in the sample.
Reagent test Kits
The reagents are packaged in foil pouches containing 10 tubes useful to perform 10 analyses.
This is the minimum package that allows the use of CDR systems even to those who need to make a few analyses, thus not wasting reagents.
There are also boxes of 100 tests, however, packaged in 10 bags of 10 tubes containing the reagent.
Code *300730 – The kit, designed for 100 tests.
Code *300735 – The kit, designed for 10 tests.
The reagents have a shelf-life of 6 months.
Processing – Sample Volume – Measuring Range
Use on beer or wort. Make a dilution of the sample 1:100, for which you can use the dedicated kit. The beer sample needs to be degassed (we recommend to use an ultrasonic bath) before making the dilution. For higher accuracy in the analysis of wort we recommend to centrifuge the sample.
|Analysis||Measuring range (% v/v)||Sample volume||Resolution||Repeatability|
|Alcohol||0 – 10||100 μL diluted||0,1% v/v||0,2% v/v|