To find out when your post office is open: 1  Enter your location in Find a Post Office. 2  A map will appear displaying post offices near you. 3  Select Hours and Services. 4  Select your desired location to view the hours of operation.
Testing Soil pH with a Commercial Test Probe. 1  1. Dig a small hole in the soil. 2  2. Fill the hole with water. 3  3. Insert the test probe into the mud.  4. Hold it there for 60 seconds and take a reading. pH is usually measured on a scale of 1-14, though the tester may not include this entire range.
Where the differences lie between the different dirt and soils becomes apparent not only visually, but also by testing each soil to see how it is composed of physically and chemically. There are various tests that homeowners can do to check the Ph of their soil, either by sending a sample in the mail to a laboratory, there a online services for this.