CDR DrinkLab is a quick, reliable and easy analysis system for the quality and process control of the beverage sector

Analysis of Water Alkalinity

Alkalinity is probably the most important parameter for beer producers as it has a direct effect on the mash. The value of alkalinity is closely linked to the style of beer that the brewer aims to produce. This parameter is therefore fundamental for achieving the sensory qualities sought.

The same parameter is also of fundamental importance in the coffee sector, where the level of alkalinity significantly influences both the extraction phase and the organoleptic characteristics of the beverage. Controlling water alkalinity is also crucial in the beverage industry to ensure the stability, quality, and consistency of the final product.

Total alkalinity is defined as the concentration of strong acid, measured in milliequivalents per litre, needed to convert bicarbonate or carbonate in the sample in carbon dioxide at a pH of 4.3. With the CDR method it is possible to determine alkalinity easily and quickly without using glassware or laboratory material, by means of a photometric reading.

Method

Sample treatment

Use water as is.

Principle of the test

The alkaline components of water react with a specific reagent leading to the formation of an adduct which absorbs at the wavelength of 366 nm. The absorbency of the sample is directly proportional to the alkalinity value.

Calibration curve

The calibration curve was constructed using the reference method of potentiometric titration.

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Kit dei Reagenti

Range di misura

AnalysesMeasuring rangeResolutionRepeatability

The perfect system for you

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CDR DrinkLab

  • 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)