Solid waste is a highly heterogeneous material, varying widely in composition depending on its source, socioeconomic conditions, climate, and consumption patterns. Understanding the physical and chemical characteristics of waste is essential for its safe handling, treatment, processing, and disposal. Proximate and ultimate analysis are two fundamental analytical approaches used to characterize solid waste, particularly combustible fractions, and they play a critical role in waste management planning, technology selection, and regulatory compliance. These analyses provide systematic information about waste properties that directly influence environmental performance, operational efficiency, and compliance with solid waste management regulations. Proximate analysis focuses on the physical composition of waste in terms of moisture content, volatile matter, fixed carbon, and ash. Moisture content represents the amount of water present in waste and is one of the most important parameters affecting waste handling and treatment. High moisture content reduces the calorific value of waste, making it less suitable for incineration or energy recovery processes, while increasing the volume and weight of waste for transportation and disposal. In regulatory frameworks, moisture content data are used to assess landfill design requirements, leachate generation potential, and stability of waste masses. For composting and biological treatment processes, moisture content is crucial in determining microbial activity and process efficiency, and regulatory guidelines often specify acceptable moisture ranges for optimal treatment. Volatile matter refers to the portion of waste that is released as gas or