Organic content is an important soil property that influences compressibility, bearing capacity, and the suitability of material for use in earthworks and construction. High organic content can make soils unsuitable for structural fill, pavement subgrade, or stabilisation programs. It is also a key parameter in rootzone assessment for turf and horticultural applications. Western Geotechnical Laboratory Services (WGLS) provides accredited Organic Content testing using the Loss on Ignition method to ASTM D2974. The test determines the percentage of organic matter in a soil sample by measuring the mass loss after ignition at high temperature. Results are used by geotechnical engineers, environmental consultants, and turf agronomists to assess soil quality and guide material acceptance decisions. Testing is carried out from our NATA-accredited laboratory in Welshpool, Perth.
