Puregold Medium Chips 50lb Bag

Sold individually. 50LB per bag. These medium chips are natural sodium bentonite screened to a size of 1/4 inch (0.64 cm) to 3/8 inch (0.95 cm). Certified to NSF/ANSI Standard 60 for Drinking Water Treatment Chemicals - Health Effects. Recommended Use: Sealing shallow boreholes and seismic shot holes; decommissioning wells; providing an interface between gravel pack and bentonite or cement grout. CHARACTERISTICS: Chemically stable. Results from TCLP Priority Pollutants analysis are below RCRA limits for hazardous constituents. Prevents infiltration of surface contamination. Provides a high-solids bentonite seal. Provides a permanent, flexible seal. Mixing and Application: Because chips may develop fines during transporting and handling, bagged material should be screened for fines before placement. Pour chips slowly downhole to prevent bridging or binding. In unsaturated conditions, water should be added at 2ft intervals to ensure adequate hydration