Campbell Scientific manufactures data acquisition and control systems, industry-grade sensors, and water-quality samplers. Battery-powered operation ensures reliable operation, even during power or communications failure. Our new water-quality samplers use reliable, long-lasting vacuum technology. This sampling method results in faster sample draws, as well as higher vertical lift and less disturbance of sample contents. There is also less wear on the tubing, resulting in less-frequent maintenance. Our new CS525 pH sensor uses a high-tech, ion-sensitive field-effect transistor (ISFET) semiconductor at its core. ISFET technology is the most powerful pH monitoring technology available today.