They might show up as slightly acidic or slightly alkaline because ... give an approximate pH value for a solution by comparing the colour of the indicator to the colour chart below.

The pH scale goes from 0 to 14 with pH 7 as the neutral point. As the amount of hydrogen ions in the soil increases the soil pH decreases thus becoming more acidic. From pH 7 to 0 the soil is ...

But too much may have health consequences. Regular tap water has a pH level of around 7.5. Alkaline water has a pH of 8 to 9. The higher the number, the more alkaline (basic). The lower the number ...