Mesa Laboratories is reaching a plateau in the field of measurements. The company makes niche-market electronic measurement, testing, and recording instruments for medical, food processing, electronics, and aerospace applications. Mesa's products include sensors that record temperature, humidity, and pressure levels; flow meters for water treatment, polymerization, and chemical processing applications; and sonic concentration analyzers. The company also makes kidney hemodialysis treatment products, including metering equipment and machines that clean dialyzers (or filters) for reuse. It also provides repair, recalibration, and certification services. Customers in the US make up about three-quarters of sales.