Titration of Spoilt Beer Samples Using Flow-Injection Analysis
Author Information
Author(s): J. G. Williams, M. Holmes, D. G. Porter
Primary Institution: Laboratory of the Government Chemist
Hypothesis
The automated flow-injection analysis method will provide results comparable to the traditional manual titration method for measuring the acidity of spoilt beer samples.
Conclusion
The automated flow-injection analysis method shows no significant difference in results compared to the manual method, indicating it is a reliable alternative.
Supporting Evidence
- The average difference between manual and FIA results was -0.22ml.
- The method has a repeatability standard deviation of 0.69.
- The correlation coefficient for the best fit line was -0.9993.
- The study found that the automated method is directly relatable to the manual method.
Takeaway
This study created a machine that can quickly and accurately measure how sour spoiled beer is, just like a person would do by hand, but without the mess.
Methodology
The study used an automated flow-injection analysis system to measure the acidity of beer samples, comparing results with traditional manual titration methods.
Potential Biases
The study acknowledges potential biases due to variations in sample density and color.
Limitations
The apparatus is cumbersome and requires an air supply, and there are challenges in preparing and storing acid standards.
Statistical Information
Confidence Interval
95%
Statistical Significance
p>0.05
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