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.
All soils can be classified as acid, neutral, or alkaline. The degree of acidity or alkalinity of a soil can be described by a pH value. pH values range from 0 to 14. Any value below 7.0 is considered acid, a value of 7.0 is neutral, and a pH above 7 is alkaline. Thus, a soil with a pH of 5.8 is acidic, whereas a soil with a pH of 7.9 is alkaline.