Purpose

The Soil Physical Properties Laboratory analyzes samples for research projects from North Carolina State University,as well as from projects at other universities,the private sector,and governmental agencies.

The Laboratory is designed to perform Particle Size Analysis and Soil Water Retention Analysis.

Particle Size is determined by the Hydrometer Method.

Soil Water Retention Analysis can be run for pressures ranging from -0.3 to -15 bars for disturbed samples,and from 0 to -0.3 bars for intact cores.

Sample Submittal

All analyses are requested using an Analysis Request Form available at:Download

Contact the laboratory manager or supervisor to discuss the nature of your request before submitting an Analysis Request Form.

Analysis and laboratory use is on a first come first-serve basis.

Charges for Soil Analysis

Particle Size Analysis by Hydrometer Method

• Cost per sample $17.82

Soil Water Retention Analysis

• Cost per Sample $29.33 for up to 4 pressures

Soils High in Organic Matter

• If the organic matter (OM) content of the soil is greater than 2%, removal of OM before particle size analysis should be considered.
• OM removal using H202 is available for an additional charge.