Determination of Alcohol by Volume (ABV) in vinegar
The test allows to measure alcohol by volume (ABV) in vinegar, which is an important quality parameter.
Method
Sample treatment
The sample needs to be diluted following the procedure described in the method.
Principle of the test
Ethanol is oxidized in an alkaline environment 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 directly proportional to the concentration of ethanol in the sample.
The result is expressed in %v/v.
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Calibration curve
The calibration curve of the CDR WineLab®, obtained by comparing the CDR method with the distillation method for determination of the alcohol content, confirmed an excellent linearity of the system over the entire measurement range.
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Reagent test Kits
Code*300740: 100 tests
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Alcohol by volume [0.1-1.8] % | 0.1 - 1.8 %vol | 0.01 %vol | 0.02 %vol |
| Alcohol by volume [3-7] % | 3 - 7 %vol | 0.1 %vol | 0.1 %vol |
| Alcohol by volume [1.5-3.5] % | 1.5 - 3.5 %vol | 0.01 %vol | 0.03 %vol |
Analyzers for process and quality control in winemaking
CDR WineLab®
Complete analysis panel, supplied already configured
Up to 16 determinations simultaneously
Possibility of carrying out analyses of the same sample
Integrated printer
Full connections (LAN - USB - Bluetooth barcode/QR code reader)
CDR WineLab® Jr
Partial analysis panel, customisable configuration
Up to 3 determinations simultaneously
Wireless connection to external printer
USB connections