• ASTM D8489-23e1

    Standard Test Method for Determination of Microplastics Particle and Fiber Size, Distribution, Shape, and Concentration in Waters with High to Low Suspended Solids Using a Dynamic Image Particle Size and Shape Analyzer
    standard by ASTM International, 03/01/2023

  • AASHTO T 236-22

    Standard Method of Test for Direct Shear Test of Soils under Consolidated Drained Conditions [ASTM Designation: D3080-72(2003)]
    standard by American Association of State and Highway Transportation Officials, 2022