Vinegar

The total acidity of the vinegar is the sum of its titratable acidities when it is titrated to pH 8.3 against a standard alkaline solution. It is a very important quality parameter for vinegar.

Determination of Total Acidity in vinegar

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

Test type: End Point. Time testing: [uni]. Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR WineLab® and 3 tests for CDR WineLab® Junior.<h3>Sample treatment</h3>Use vinegar as it is. If necessary, the sample should be centrifuged (code 222061) or filtered (code 300210).

Method

The total acidity reacts with a proper chromogen to decolorize it. The magnitude of discoloration, measured at 620 nm, is proportional to the total acidity value in the sample.

 Test Principle

Chemical reaction involved in the determination of total acidity in vinegar

Chemical reaction involved in the determination of total acidity in wine and must

The calibration curve showed a good linearity of the system on the whole measuring range, compared to reference method.

Calibration curve

Calibration curve CDR WineLab® total acidity analysis in vinegar. R²=0.9958

Reagent test Kits

Measuring range

Wine Analysis with CDR WineLab® top version

CDR WineLab®

Wine Analysis with CDR WineLab® junior version

CDR WineLab® Jr

The Analyzers for quality control in vinegar production

Total Acidity

Oils and fats

Frying oils and fried snacks

Fish Oil

Olive oil