What is great about this claim is that we can falsefy this ourselves with simple ph paper.
pH paper is a rapid, manual tool used to estimate the acidity or alkalinity of a liquid, typically measuring a range from 0 to 14. It changes color based on the concentration of hydrogen ions in a solution—turning red/orange for acids, yellow/green for neutral, and blue/violet for bases—which is then compared to a color chart to determine the pH value.
Key Aspects of pH Paper:
How it Works: The paper is treated with a combination of pH indicators (weak acids or bases) that change color when they react with the ions in the solution.