What is the first test used to characterize lead waste?

The first test used to characterize lead waste is the Total Threshold Limit Concentration (TTLC). This test is essential for determining whether a waste material is classified as hazardous based on the concentration of lead it contains. The TTLC sets a threshold concentration level; if the amount of lead in the waste exceeds this limit, the waste is classified as hazardous. This initial characterization is crucial for proper waste management and regulatory compliance, as it dictates how the waste must be handled, treated, and disposed of.

The TTLC is a preliminary screening tool that helps identify hazardous waste before further testing, such as the Soluble Threshold Limit Concentration (STLC) or the Toxicity Characteristic Leaching Procedure (TCLP), is conducted to provide additional insights on waste characteristics.