Importance

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Abstract

The invention relates to a method for rapid measurement of acidity in juice. A sample vial is quantitatively filled with juice and transferred to a mixing vessel. A drop of pH indicator solution is added to the mixing vessel. While swirling to mix, a calibrated dropper is used to add a known concentration of titrant. The titrant is added and the number of drops that are required to cause a color change is noted. The number of drops of titrant used is multiplied by a predetermined conversion factor to generate a percent acidity value appropriate for the sample type. Different concentrations of titrant or different volumes of sample, with different conversion factors, are used, depending on the level of acidity expected in the sample. The method is rapid, with accuracy and precision comparable to traditional burette titrations.

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First Claim