Profile: Instrument Science Ltd. offers innovative instruments for trace gas analysis and stable isotope ratio measurement. Our product line includes isotope radio instruments, trace gas analyzers, and indirect calorimeter. Our GEM (gas exchange measurement device) is an open circuit flow-through indirect calorimeter designed to measure human energy balance and substrate turnover for research focused on nutrition and metabolism. We offer a comprehensive solution to development, which includes feasibility studies, design, development, documentation, prototyping, and production services for hardware and electronics.