ASTM Committee D35 on Geosynthetics has revised D5261, “Standard Test Method for Measuring Mass per Unit Area of Geotextiles,” as D5261-10. This test method is used to determine if the geotextile material meets specifications for mass per unit area. This test method can be used for quality control to determine specimen conformance. This measurement allows for a simple control of the delivered material by a comparison of the mass per unit area of the delivered material and the specified mass per unit area.