Calcium analysis allows, in a simple and fast way, to quantify the concentration of the analyte in the water used in the brewing process and to control this parameter in the wort during the production process. Calcium reacts with the malt phosphates causing the decrease in pH, promotes enzymatic activity, contributes to the coagulation of proteins, the flocculation of yeast and the precipitation of oxalates.
The systems to test Calcium in Beer and Water
Carbohydrates 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® |
 CDR BEERLAB® JUNIOR |
|
|---|---|---|
| Analyses |
Beer, Wort and Water: Bitterness (IBU) Fermentable Sugars Alcohol by Volume (ABV) Acetic acid Yeast Vitality Vicinal Diketons (VDKs) Total sulfur dioxide Free Amino Nitrogen (FAN) by OPA Colour Starch pH Lactic Acid (D + L) Polyphenols in beer Carbohydrates in Beer Calcium in Beer and Water Alkalinity of water Bicarbonate 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 |  |
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Method
Test type: End Point.
Testing time: 8 minutes.
Are possible test sessions with several samples, up to 16 tests for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.
Test Principle
Calcium reacts with a chromogen and generates a colored complex, whose absorbance measured at 580 nm is proportional to the amount of the analyte present in the water sample.
Calibration Curve
The calibration curve was constructed using standard calcium solutions. The trend of the curve confirmed an excellent linearity of the system over the whole measuring range.
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.
Reagent test kit *300700, suitable for 100 tests
Reagent test kit *300695, suitable for 10 tests
The reagents have a shelf-life of 12 months.
Processing of Sample
Use on beer, wort and water. In case of water, use sample as it is. Beer sample has to be degassed (we suggest the use of an ultrasonic bath), before taking it. For a higher analysis accuracy, in case of wort it is recommended to centrifuge the sample.
Measuring Range
| Analysis | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Calcium on Water | 20 – 250 ppm | 1 ppm | 4 ppm |
| Calcium on Beer | 20 – 150 ppm | 1 ppm | 5 ppm |
