The TruCore from Sim/Tech Filter is a large-diameter, accurate, user-friendly sludge sampler designed for use in the thicker sludge common to septic tanks. It allows samples to be taken quickly without creating excessive turbulence, as there are no restrictions caused by valves, stoppers or flaps. With a 1 3/8-inch inside diameter, the capacity per foot is almost 10 ounces. The straight-through design allows the sample to be quickly and effortlessly returned to the tank. The unit is made of a polycarbonate sampling tube (clearly marked every foot) and PVC fittings. It comes as a single-piece 8-foot unit or as two 4-foot units that slip together. Custom sizes and configurations are also available. A simple and customizable extension kit is available for deeply buried tanks. 888/999-3290; www.simtechfilter.com.