AMS Inc. offers the GMS 2001 Groundwater Monitoring System, a small unit that has the option of creating documentation for monitoring results. The system simultaneously monitors pH, redax, specific conductivity, dissolved oxygen and water temperature. It is self-contained for quick and easy movement, and the GMS 2001 is especially applicable for sampling ground or surface water, as well as agricultural and industrial wastewater. Art's Manufacturing & Supply, Card No. 37