Determination of Total Acidity in vinegar
The total acidity of the vinegar is the sum of its titratable acidities when it is titrated to pH 8,1 against a standard alkaline solution. It is a very important quality parameter for vinegar.
Method
Test type: End Point.
Time testing: 6 minutes.
Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR WineLab® and 3 tests for CDR WineLab® Junior.
Sample treatment
Use vinegar as it is. If necessary, the sample should be centrifuged (code 222061) or filtered (code 300210).
Principle of the test
The total acidity reacts with a proper chromogen to decolorize it. The magnitude of discoloration, measured at 578 nm, is proportional to the total acidity value in the sample.
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Calibration curve
The calibration curve showed a good linearity of the system on the whole measuring range, compared to reference method.
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Reagent test Kits
Code*301455: 10 tests
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Acidity [2-12] % | 2 - 12 g/100 ml acetic acid | 0.1 g/100 ml acetic acid | 0.1 g/100 ml acetic acid |
Analyzers for process and quality control in winemaking
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)
CDR WineLab® Jr
Partial analysis panel, customisable configuration
Up to 3 determinations simultaneously
Wireless connection to external printer
USB connections