Determination of pH in wort

CDR BeerLab is the easy, fast and reliable testing system to be used directly at the brewery with no need of expertise in chemical analysisPH value in the wort in the mashing phase is a very important parameter to assure the perfect conversion of starch in simple sugars. The possibility to measure this parameter in wort allows to make the necessary adjustments immediately and to reduce the time of the mashing phase.
The analysis method of CDR BeerLab® systems is correlated with reference potentiometric method with ph-meter, it can be performed in few simple steps obtaining in 1 minute accurated and precise results. You do not need to calibrate the instrument nor to use calibration solutions, making the analytical control procedure clear and reliable.

The systems to test pH in beer and wort

pH can be measured using CDR BeerLab®, a system which enables you to carry out a wide panel of chemical analyses on beer and water, using a single instrument, in a process that is faster and simpler than traditional methods.
With CDR BeerLab® brewers and breweries of any size can independently carry out brewing process controls without having to rely on external laboratories.

  CDR BeerLab: chemical analysis system specifically designed to monitor the brewing process  in breweryCDR BEERLAB®  CDR BeerLab Junior: chemical analysis system specifically designed to monitor the brewing process  in breweryCDR BEERLAB® JUNIOR
Analyses Beer and Wort:

Bitterness (IBU)
Fermentable Sugars
Alcohol by Volume (ABV)
Acetic acid
Yeast Vitality
Vicinal Diketons (VDKs)
Total sulfur dioxide
Free Amino Nitrogen by OPA (FAN)
Lactic Acid (D + L)
Polyphenols in beer
Alkalinity of water
Bicarbonate in Water
Calcium in Water
Zinc in Water
Sulfate in Water
Magnesium in Water
Potassium in Water
Chloride in Water

Configuration with tailored panel of analyses

Simultaneous Sample Analyses 16 3
Multiple Analyses on a Sample si


Test type: End Point.
Time testing: 1 minute.
Are possible test sessions with several samples, up to 16 tests for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.

Correletion Curve

Samples were analysed for pH using the CDR BeerLab® and the reference UKAS accredited method (Campden BRI Method AM/029 based on Analytica EBC, 9.35, 2004 and 8.17, 1999). The curve was obtained as part of the comparative study of the analytical methods of CDR BeerLab® and the reference methods conducted by the Campden BRI international laboratory

Analysis of pH in wort and Beer CDRBeerLab vs Reference Method Campden BRI

Test Principle

pH value determination is made through a colorimetric acid-base reaction in which a phenol derived, added to the matrix to be analyzed, causes a variation of the coloration. The magnitude of the coloration, measured at 630 nm is correlated with the pH of 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 *300625 – The kit, designed for 10 tests

Code *300620 – The kit, designed for 100 tests

The reagents have a shelf-life of 6 months.

Processing of Sample

For an adequate accuracy it is necessary to centrifuge the wort sample before carrying out the analysis.

Measuring Range

Analysis Measuring range Resolution Repeatability
pH 3.60 – 6 0.01 0.02

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

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pH was last modified: February 19th, 2019 by CDR s.r.l.