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.
Soil pH measures the acidity or alkalinity of a soil, with a pH below 7.0 indicating that the soil is acidic and a pH above 7.0 indicating alkaline conditions. Soil pH affects nutrient availability and thus can greatly influence plant health. Various types of tests are available for individual homeowners or growers to test the pH of their soil.