pH Meters, Dissolved Oxygen Meters, Conductivity Meters. A new product line from the industry leader. Ohaus Corporation who has been in the industry of manufacturing weighing equipment for more than 100 years now broadens its product line to the water analysis equipment. With its well known quality and precision, Ohaus now proudly offers wide range of water analysis instruments and accessories to fit any application and budget. Find all Ohaus water analysis instruments here