According to the Notification of the Ministry of Industry regarding Disposal of Wastes or Unusable Materials, B.E. 2548 (2005), Article 21, Section 4, it stipulates that “Operators of waste treatment or disposal or unusable materials shall provide data on chemical and physical analysis of wastes unusable materials before performing treatment or disposal operations.” As a result, hazardous wastes that will be combusted in an industrial waste incinerator must be analyzed before the incineration in order to find physical and chemical composition by performing the analysis and inspection covering hazardous wastes in a type of wastes, wastewater, air and oil, under the assurance of operations of analytical laboratory certified and licensed for registration from Department of Industrial Works, Ministry of Industry.