Viewing post #1168984 by sooby

dyzzypyxxy said:

The pH factors of both water and soil are measured in decimals (tenths) and every decimal is a 100 times factor. So water that tests at pH 7.5 is 500 times more alkaline than neutral water at pH 7.0.

The pH scale is logarithmic. There's a 10x difference between numbers on the pH scale. So pH 6 is 10x more acidic than pH 7. A pH of 5 is 100x more acidic than pH7, and pH4 is 1000x more acidic than 7. Certainly the water pH is going to affect the sample test, although presumably the water source that is normally used for irrigation will also affect the pH in the soil itself.