Welcome to In-Situ.com

In-Situ^® Inc. is a leading manufacturer of in-situ (on-site) water monitoring instruments. We provide rugged, reliable, and accurate instruments for field measurement, whether it be for spot sampling or long-term, unattended deployments. We also provide the best service in the industry.

Our featured products above include the TROLL^® 9500 multiparameter instrument with the RDO^® optical dissolved oxygen (DO) sensor in a river application and the In-Situ Aqua Buoy with the RDO sensor in an aquaculture pond.