In infrastructure systems, drinking water pipes, gas pipes, and wastewater pipes fall under the high-density polyethylene (HDPE) class. The standards specify a lower limit for HDPE class materials, making density testing crucial in this context. Additionally, the standard also defines a density range for PVC pipes used in infrastructure systems. Test results falling outside this range are considered non-compliant with the standard. Density testing is one of the most important tests to be conducted in batch testing.