Determination of TPI - Total Poliphenols Index

The polyphenols are a very broad class of compounds whose electronic spectra have an absorption peack at 280nm. The photometric reading at 280nm is then proportional to the amount of the polyphenols present in wine or must sample.

The Analyzers CDR WineLab^® for determining Total Polyphenols Index 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®	CDR WINELAB® JUNIOR
Analyses	Fermentable 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 Analyses	16	3
Multiple Analyses on a Sample		–

Method

Test type: End Point.
Testing time: one test 11 minute.
Test sessions with several samples are possible, up to a maximum of 16.

Calibration curve

The calibration curve of CDR WineLab^®, obtained using reference methods, confirms the excellent linearity of the system over the whole testing range.

Test Principle

Photometric reading at 280 nm

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. *300495: 10 tests 

Code. *300505: 100 tests (10 packages of 10 tests)

The reagents have a shelf-life of 12 months

Processing – Sample Volume – Measuring Range direction

Use the wine as is or centrifuged must.

Click and Discover more about CDR WineLab^®: analysis system fast, simple to use and reliable for determining multiple parameters in wine and must