Whatman 1810-142 Filter Circles, 142mm Dia, Binder Free Acid Treated Low Metal TCLP, 50/pk

These filters are specifically designed for Toxicity Characteristic Leaching Procedure (TCLP) testing, a laboratory method used to evaluate hazardous waste and determine whether contaminants may leach into groundwater. Laboratories performing environmental testing, waste analysis, and regulatory compliance commonly use these filters for accurate sample filtration.

The filters are made from binder-free borosilicate glass microfiber, which provides high purity and minimizes contamination during trace-level analysis. The binder-free construction helps ensure reliable results when testing for metals or other sensitive compounds.

These filters typically offer 0.6–0.8 µm particle retention, enabling efficient removal of fine particulate matter from liquid samples while maintaining good flow rates. This specification meets the requirements for TCLP testing methods used in environmental laboratories.

Low-metal filters reduce the risk of trace metal contamination during sample preparation and analysis. This is critical when testing environmental samples for metals such as lead, arsenic, or cadmium because even small background contamination can affect analytical accuracy.

The 142 mm diameter makes these filters compatible with many large laboratory filtration systems and TCLP extraction jars. They are commonly used in environmental laboratories handling non-volatile waste samples that require large-diameter filtration media.