Determination of Total Acidity in Wine

CDR WineLab is the fast, simple and reliable wine analysis system to be used right in the winery with no need of qualified personnel in the field of chemical assaysWith 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.

The Analyzers CDR WineLab® for determining Total Acidity in Wine and Must

The system is supplied pre-calibrated and ready for use.
Results are expressed in accordance with the reference method.
It is also possible to standardize the system using samples with a known titration.
The reagents have a shelf-life untill 18 months
The analytical methods are simple: the system does not require an equipped laboratory or skilled staff.

  CDR WineLab wine analyzer CDR WINELAB®  CDR WineLab wine analyzer Junior VersionCDR WINELAB® JUNIOR
Analyses Wine and Must:

Acetic acid (volatile acidity)
Fermentable Sugars
Total Acidity
L-Lactic Acid
L-Malic Acid
Free sulfur dioxide
Total sulfur dioxide
Alcohol by Volume
Yeast Assimilable Nitrogen (YAN)
Gluconic Acid
Acetaldehyde (Ethanal)
pH
Total Polyphenols Index
Glycerol
Colour (tonality and intensity)
Total Polyphenols
Total Anthocyanins
Polymerised Anthocyanins
HCl Index
Tannins
Catechins
Copper
Configuration with tailored panel of analyses
Simultaneous Sample Analyses 16 3
Multiple Analyses on a Sample si

Method

Test type: End Point.
Time testing: one test 1 minute80 Test/Hour.
Are possible test sessions with several samples, up to a maximum of 16.

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 between determination of Total Acidity In Wine with CDR WineLab and Reference Method

 

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. 300320 : 10 tests 

Code. 300315 : 100 tests (10 packages of 10 tests)

The reagents have a shelf-life of 6 months

Test Principle

Total acidity in wine is the sum of the titratable acidities; it is determined for addition of an alkaline solution titrated until reaching pH 7. The carbon dioxide is not included in the total acidity.

Acids+ coloured chromogen reazione per la determinazione acidità totale nel vino neutralized Acids + colourless chromogens

 

Processing – Sample Volume – Measuring Range

 

Wine: use as is.

Test Measuring range
(g/L of tartaric acid)
Resolution
(g/L of tartaric acid)
Repeatability
Total Acidity 1 -10 0,1 0,13 g/L

Reagents developed by CDR S.r.l - Quality System Certified ISO 9001 Ed. 2015 - Certificate n. 9115

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Total Acidity was last modified: July 24th, 2019 by CDR s.r.l.