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.

The pH scale goes from 0 to 14 with pH 7 as the neutral point ... The most accurate method of determining soil pH is by a pH meter. A second method which is simple and easy but less accurate then ...

In addition to pH, ion, voltage and temperature measurement, the combined 781 pH/Ion Meter also offers an automatic stirrer control, a multi-point calibration with up to nine buffers (pH mode), a ...