Schroeder was one of the first to identify the need for fine micronic filtration in hydraulic systems and was a pioneer in the development of many filtration concepts and products. Before the idea of fine micronic filtration was even mentioned in many engineering textbooks, Schroeder had set performance standards for this kind of contamination control in many markets such as mining, mobile equipment, and automotive manufacturing. In fact, the HF4 automotive standard was written with the Schroeder K-Size element in mind.