"That's because our body is sharp and has built-in mechanisms to keep pH levels in check." Moreover, alkaline diet proponents say that acidic foods leave behind an "acid ash" in the body ...

The pH scale measures how acidic or alkaline a substance is, measured on a scale from 0 to 14, in which 0 is the most acidic.

They might show up as slightly acidic or slightly alkaline because of this. The pH scale measures how strongly acidic or alkaline a solution is using a set of values from pH 0 to pH 14.

Test pH levels using baking soda and vinegar to determine if soil is alkaline or acidic. Use baking soda to raise soil pH ...