Determination of pH in cider
With CDR CiderLab is possible to determine pH in cider with a colorimetric method whose results are correlated to the results of the reference method which is based on an electrochemical measuring.
CDR CiderLab method, that does not require the use of any probe, does not need maintenance or calibration.
Method
Sample treatment
If necessary, the sample shall be degassed using the specific ultrasonic bath (code 222062). In case of tests performed on must, the sample shall be centrifuged (code 222061) or filtered (code 300210).
Principle of the test
pH measures the dissociation grade of acids present in cider. This parameter influences the vinification and conservation of cider. The range of pH value is approximately 3.00 – 4.00. There is not any legal limit.
pH is determined through acid-base colorimetric reaction in which a phenol derivative, for addition of cider, undergoes a decoloration. The entity of this decoloration, measured at 630 nm, is correlated to pH in the sample.
Calibration curve
The calibration curve of CDR CiderLab for determination of pH in cider, obtained using reference methods, confirms the excellent linearity of the system over the whole testing range.
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Reagent test Kits
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
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The Analyzers for process and quality control in cider production
CDR CiderLab
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)
CDR CiderLab Jr
Partial analysis panel, customisable configuration
Up to 3 determinations simultaneously
Wireless connection to external printer
USB connections