Total Polyphenols 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 cider.
The Analyzers CDR CiderLab for determining Total Polyphenols Index in cider
The system is supplied pre-calibrated and ready for use.
Results are expressed in accordance with the reference method.
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 CiderLab||CDR CiderLab JUNIOR|
Free sulfur dioxide (Free SO2)
Total sulfur dioxide (Total SO2)
Yeast assimilable nitrogen (YAN)
TPI – Total Polyphenols Index
|Configuration with tailored panel of analyses|
|Simultaneous Sample Analyses||16||3|
|Multiple Analyses on a Sample||–|
Test type: End Point.
Testing time: one test 11 minute.
Test sessions with several samples are possible, up to a maximum of 16.
The calibration curve of CDR CiderLab, obtained using reference methods, confirms the excellent linearity of the system over the whole testing range.
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: The kit, designed for 10 tests
Code *300505: The kit, designed for 100 tests
The reagents have a shelf-life of 12 months.
Processing – Sample Volume – Measuring Range direction
Use the cider as is or centrifuged juice.
|Sample volume||Resolution (280nm)||Repeatability (280nm)|
|TPI||2 – 100 OD||10 µL||0.1 OD||0.4 OD|