Ludlum Measurements

Ludlum Measurements is a privately held U.S. manufacturer of radiation detection and measurement instruments used across health physics, medical physics, emergency response, border security, metal recycling, and environmental and personnel safety applications. Founded in 1962 in Sweetwater, Texas, the company designs and manufactures a broad portfolio that includes portable survey meters, personal radiation meters, benchtop meters, detectors, monitoring systems, dosimetry-related tools, and radiation portal monitors. The business appears to be vertically integrated, with in-house capabilities spanning PC board assembly, plastic injection molding, photomultiplier tube work, and plastic scintillator design and manufacturing. Ludlum also operates calibration, repair, and training services, including ISO/IEC 17025-accredited service operations. For a biotech or healthcare analyst, the company is best understood not as a therapeutics developer, but as an established commercial radiation instrumentation supplier serving medical physics and broader radiation safety markets.