The Extech EC510 is a complete field-ready water quality testing kit based on the EC500 meter, enhanced with calibration standards, buffers, and accessories for immediate, accurate measurements. Ideal for environmental professionals, aquaculturists, and water treatment technicians, it includes pH buffer pouches (4.01, 7.00, 10.01), three conductivity standards (84 µS, 1413 µS, 12.88 mS), weighted base, sample cups, and a hard carrying case—offering significant savings over purchasing components separately.