While developing the ECO 51x series, the focus was on the essential functions of the measurement technology. The Pure measurement with focus on precision, speed and reliability, packed in a compact housing enables the outstanding price-performance ratio, made in Germany. The hand-held measuring devices impress through their ergonomic design, the dust and water-protected design according to IP 65/67 and the illuminated display. The pH-meters are a real alternative to pH-sticks on the one hand and to high-priced, complex devices on the other. The measuring device ECO 510 enables measurements in the pH range, the ECO 511 offers additionally the possibility of measuring in the pH/redox range with temperature input (Pt1000). The measuring devices can be used in the areas of aquariums, acuqa and water monitoring, plant breeding, agricultural culture, in laboratories, quality assurance, service and food.DisplayThe three-line LCD display provides ergonomic wide-angle visibility thanks to the b