An overview of the PanLab Langendorff System features (constant pressure or flow) for isolated heart work with ADI's head of Support, Mark de Reus. Enhance your cardiovascular research with an ADInstruments Langendorff System. The robust Panlab apparatus is ideal for perfusing small animal hearts, such as mouse and rat, and allows you to measure cardiac contractile strength (inotropic effects), heart rate (chronotropic effects) and vascular effects, without the influence of neuronal and hormonal factors.