CDR WineLab® the reliable, complete and fast system of wine analyses

Determination of colour (Tonality and Intensity) in Vinegar

The chromatic features of a vinegar are defined by two analytical parameters: tonality and intensity. Through appropriate mathematical formulas, calculating the absorbance at 420 nm, 520 nm and 620 nm, it is possible to determine intensity and tonality values.


Test Principle

Readings of absorbance at 420 nm, 520 nm and 620 nm are made on vinegar (sample as is) pre-filled into the cuvettes. The instrument automatically calculates the tonality (according to the formula Abs 420 nm/Abs 520 nm) and the intensity (according to the formula Abs 420 nm + Abs 520 nm + Abs 620 nm). The innovative CDR method makes the standard procedure easier and faster. The special photometric technology together with the provided cuvettes, enable to reach higher optical densities compared to normal spectrophotometers obviating the problems of sample dilution.

Calibration curve

Comparative tests have shown an excellent correlation on the entire measuring range with the reference method.


Reagent test Kits

Measuring range

AnalysesMeasuring rangeResolutionRepeatability

The analyzer for quality control in vinegar production


CDR WineLab®

  • 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)