Mark Diener, also known as Question Mark, is the face of JULABO USA. Mark graduated from the Ohio State University with an MS in Organic Chemistry. With direct experience working in the lab, he can talk for hours on end about our products. Mark conducts product training for all JULABO USA employees, and he is responsible for all product life-cycle management from product introduction to discontinuation. He is the best person to ask questions about specific applications in temperature control, including how the JULABO USA app formula calculator can get you the best product recommendations. He’s also the inspiration for our tagline – We heat things up and cool them down.®