What kind of sample is needed for an HG type test?
Two gallons of soil are needed to conduct this test. The results of the test will be only as good as the quality of sample collected and submitted. To get meaningful results, the sample submitted needs to be representative of the area of interest (usually an entire field). The sample must contain soil collected from throughout the area sampled, not just from one spot in the area. Soil should be collected to a depth of 6 to 8 inches from 20 to 40 locations throughout the area being sampled. All of the soil should be combined and submitted for the HG type testing.
