About YSI

YSI was founded on the spirit of innovation. The burning desire to solve a problem, develop a solution, and change the world is woven into the fabric of YSI and our team.

It all started in Yellow Springs, Ohio in 1948. In the beginning, two engineers, Hardy Trolander and John Benedict, embraced their entrepreneurial side, setting out to solve the problems of the day through the application of good science. They were joined by chemist David Jones.

We work with industry and government professionals to provide monitoring and sampling solutions for process improvement and to protect our planet's natural resources.