The method of determining toxicity when leaching solid waste is the standard for determining hazardous waste. And this is also an important technical advance of solid waste management and treatment. According to the EPA 846 Solid Waste Manual, the SPLP test (Method 1311) “is designed to determine the mobility of both organic and inorganic analytes present in liquids, soils, and wastes.” SPLP kneads the sample in one extraction for 18 +/- 2 hours (similar to TCLP). A total of 10 MEP tests including 240 hours of mess. Because of this, the acid washout time of MEP is 13 times longer than that of SPLP (18 tumbling hours).