SB 103 The SB 103 Materials Analyst Specialist certification is a one-day certification course that certifies an individual’s to properly sample and test soils and flexible base properties in accordance with TxDOT Test Procedures. There is no demonstration or training; individuals must come prepared to pass examinations of associated test procedures through demonstration, verbal and practical methods. Once the evaluations are successfully completed, a final written examination is administered. A score of 80% or higher is necessary to obtain certification. Test Procedures covered: Tex-100-E Surveying and Sampling Soils for Highways Tex-101-E Preparing Soil and Flexible Base Material for Testing (Parts I & II) Tex-128-E Determining Soil pH Tex-129-E Measuring the Resistivity of Soils Tex-145-E Determining Sulfate Content in Soils, Colorimetric Method Tex-400-A Sampling Stone, Gravel, Sand, Mineral Aggregates Tex-600-J Sampling and Testing Lime (Part I) Re-certification Every three (3) years all SB 103 Materials Analyst Specialists are required to re-certify. The re-certification course is a one day class. A Specialist can attend a re-certification class up to one year prior to the expiration date. If certification expires, Specialists will lose certification and be issued a new certification number upon completion of another SB103 training and certification class.