Determination of Total Acidity in Wine and Must

With CDR WineLab®, device for wine analysis, is possible to determine Total Acidity in wine with a simple photometric reading of a sample of wine as is dispensed in a cuvette that is prepared with the reagent and already provided.

It is not necessary to resort to the tritation that is required from the OIV reference method. The results are correlated with the ones obtained with OIV reference method.

 

This analysis can also be performed on wine vinegar.

Method

Test Principle

Total acidity reacts with a proper chromogen, bleaching it. The decrease of absorbance is proportional to the total acidity value in the sample.

Chemical reaction involved in the determination of total acidity in wine and must

 

 

Calibration curve

The calibration curve of CDR WineLab®, obtained using reference methods, potentiometric titration, confirms the excellent linearity of the system over the whole testing range.

Correlation of the CDR WineLab® method with the reference method of the analysis of total acidity in wine and must. R² = 0.98

Reagent test Kits

Measuring range

AnalysesMeasuring rangeResolutionRepeatability

Analyzers for process and quality control in winemaking

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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)
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CDR WineLab® Junior

  • Partial analysis panel, supplied configured with 3 analyses of your choice, implementable
  • Up to 3 determinations simultaneously
  • Wireless connection to external printer
  • USB connections
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