Determination of pH in wine

CDR WineLab analysis system fast, simple to use and reliable for determining multiple parameters in wine and mustWith CDR WineLab® is possible to determine pH in wine with a colorimetric method whose results are correlated to the results of the OIV method which is based on an electrochemical measuring.

CDR WineLab® method, that does not require the use of any probe, does not need maintenance or calibration.

The Analyzers CDR WineLab® for determining pH 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 analyzerCDR WINELAB®CDR WineLab wine analyzer Junior VersionCDR WINELAB® JUNIOR
AnalysesFermentable Sugars
Total Acidity
Acetic Acid
L-Lactic Acid
L-Malic Acid
Malolactic Fermentation
Alcohol
Free sulfur dioxide (Free SO2)
Total sulfur dioxide (Total SO2)
pH
Yeast assimilable nitrogen (YAN)
Gluconic Acid
Glycerol
Polyphenols
TPI – Total Polyphenols Index
Acetaldehyde (Ethanal)
Anthocyanins
Catechins
Colour intensity and tonality
Copper
Configuration with tailored panel of analyses
Simultaneous Sample Analyses163
Multiple Analyses on a Samplesi

Method

Test type: End Point.
Time testing: one test 1 minute 80 Test/Hour.
Are possible test sessions with several samples, up to a maximum of 16.

Calibration curve

The calibration curve of CDR WineLab® for determination of pH in wine, obtained using reference methods, confirms the excellent linearity of the system over the whole testing range.

Determination of Ph In Wine with CDR WineLab correlation with 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. *300310 : 10 tests 

Code. *300305: 100 tests (10 packages of 10 tests)

The reagents have a shelf-life of 6 months

Test Principle

pH measures the dissociation grade of acids present in wine. This parameter influences the vinification and conservation of wine. The range of pH value is approximately 3.00 – 4.00. There is not any legal limit.

pH is determined through acid-base colorimetric reaction in which a phenol derivative, for addition of wine, undergoes a decoloration. The entity of this decoloration, measured at 630nm, is correlated to pH in the sample.

Processing – Sample Volume – Measuring Range

Wine: use as is.

TestMeasuring range
(pH)
Sample volumeResolution
(g/L of acetic acid)
Repeatability
pH3,00 – 4,0050 µL0,010,02

Reagent developed by CDR S.r.l - ISO 9001 certified company

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pH was last modified: May 23rd, 2017 by CDR s.r.l.