These samplers feature rigid 8-ft lengths of clear, 1-1/4”dia polycarbonate tubing which will not turn cloudy from sunlight or become brittle in cold weather like acrylic sludge samplers. The design offers a Slip-Loc quick-disconnect coupler and twin double o-ring seals to ensure a rugged, liquid-tight connection. Coretaker features a check valve for sample release; soft foam, floating lanyard handle; and pre-numbered yellow 1-ft markers.