Inch-On Materials Testing Laboratory is a DPWH-BRS accredited Engineering and Construction Laboratory established in November 2018. Inch-On is an independent testing laboratory dedicated to verifying the quality of soil and construction materials. It also conducts in-situ testing of soil, concrete, and foundation piles using specialized equipment to ensure structural and foundational integrity. Inch-On follows ASTM and AASHTO testing standards and is accredited by the Department of Public Works and Highways – Bureau of Research and Standards (DPWH-BRS).